155-398: Decapitation is the total separation of the head from the body. Such an injury is invariably fatal to humans and most other animals, since it deprives the brain of oxygenated blood by way of severing through the jugular vein and common carotid artery , while all other organs are deprived of the involuntary functions that are needed for the body to function. The term beheading refers to
310-462: A "cult of the severed head" , as evidenced by both Classical literary descriptions and archaeological contexts. This cult played a central role in their temples and religious practices and earned them a reputation as head hunters among the Mediterranean peoples. Diodorus Siculus , in his 1st-century Historical Library (5.29.4) wrote the following about Celtic head-hunting: They cut off
465-731: A blood bank . There are many different blood types in humans, the ABO blood group system , and the Rhesus blood group system being the most important. Transfusion of blood of an incompatible blood group may cause severe, often fatal, complications, so crossmatching is done to ensure that a compatible blood product is transfused. Other blood products administered intravenously are platelets, blood plasma, cryoprecipitate, and specific coagulation factor concentrates. Many forms of medication (from antibiotics to chemotherapy ) are administered intravenously, as they are not readily or adequately absorbed by
620-599: A chargé d'affaires in Paris, writing "despatches to the British Secretary of State ". He wrote of his Paris life, "I really wish often for the plain roughness of The Poker Club of Edinburgh... to correct and qualify so much lusciousness." Upon returning to Britain in 1766, Hume wrote a letter to Lord Hertford after being asked to by George Colebrooke ; the letter informed Lord Hertford that he had an opportunity to invest in one of Colebrooke's slave plantations in
775-617: A guillotine -like device known as a Fallbeil ("falling axe") since the 17th and 18th centuries, and decapitation by guillotine was the usual means of execution in Germany until the abolition of the death penalty in West Germany in 1949. It was last used in communist East Germany in 1966. In Nazi Germany , the Fallbeil was reserved for common criminals and people convicted of political crimes , including treason . Members of
930-468: A normative conclusion of what ought to be done. Hume denied that humans have an actual conception of the self, positing that we experience only a bundle of sensations , and that the self is nothing more than this bundle of perceptions connected by an association of ideas. Hume's compatibilist theory of free will takes causal determinism as fully compatible with human freedom. His philosophy of religion , including his rejection of miracles, and of
1085-513: A "simple Roman tomb", requesting in his will that it be inscribed only with his name and the year of his birth and death, "leaving it to Posterity to add the Rest". David Hume died at the southwest corner of St. Andrew's Square in Edinburgh's New Town , at what is now 21 Saint David Street. A popular story, consistent with some historical evidence and with the help of coincidence, suggests that
1240-622: A UN report from Congolese refugees, they believed the Bana Mura and Kamuina Nsapu militias have "magical powers" as a result of drinking the blood of decapitated victims, making them invincible. Besides the massive decapitations (like the beheading of 40 members of the State Police), a globally notorious case happened in March 2017 to Swedish politician Zaida Catalán and American UN expert Michael Sharp, who were kidnapped and executed during
1395-574: A blood transfusion, because the metabolism of transfused red blood cells does not restart immediately after a transfusion. In modern evidence-based medicine , bloodletting is used in management of a few rare diseases, including hemochromatosis and polycythemia . However, bloodletting and leeching were common unvalidated interventions used until the 19th century, as many diseases were incorrectly thought to be due to an excess of blood, according to Hippocratic medicine. English blood ( Old English blod ) derives from Germanic and has cognates with
1550-486: A chair on a scaffold. The executioner used a knife to cut the head from the body. It was considered to be a more honourable death if the executioner started with cutting the throat. Iran , since the 1979 Islamic Revolution , has alleged it uses beheading as one of the methods of punishment. Oxygenated blood Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to
1705-568: A chest, and display them with pride to strangers, saying that for this head one of their ancestors, or his father, or the man himself, refused the offer of a large sum of money. They say that some of them boast that they refused the weight of the head in gold. Both the Greeks and Romans found the Celtic decapitation practices shocking and the latter put an end to them when Celtic regions came under their control. According to Paul Jacobsthal , "Amongst
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#17327757611901860-518: A coldness—which he attributed to a "Laziness of Temper"—that lasted about nine months. Scurvy spots later broke out on his fingers, persuading Hume's physician to diagnose him with the "Disease of the Learned". Hume wrote that he "went under a Course of Bitters and Anti-Hysteric Pills", taken along with a pint of claret every day. He also decided to have a more active life to better continue his learning. His health improved somewhat, but in 1731, he
2015-517: A comparatively honorable form of execution for criminals. The traditional procedure, however, included first being tied to a stake and whipped with rods. Axes were used by the Romans, and later swords, which were considered a more honorable instrument of death. Those who could verify that they were Roman citizens were to be beheaded, rather than undergoing crucifixion . In the Roman Republic of
2170-417: A hot pan's handle is more forceful than simply thinking about touching a hot pan. According to Hume, impressions are meant to be the original form of all our ideas. From this, Don Garrett (2002) has coined the term copy principle, referring to Hume's doctrine that all ideas are ultimately copied from some original impression, whether it be a passion or sensation, from which they derive. After establishing
2325-459: A limited time even after connection to the brain is lost, responding to any nearby stimulus. In addition, the bodies of chickens and turtles may continue to move temporarily after decapitation. Although head transplantation by the reattachment of blood vessels has seen some very limited success in animals, a fully functional reattachment of a severed human head (including repair of the spinal cord , muscles, and other critically important tissues)
2480-625: A mission near the village of Ngombe in Kasaï Province . The UN was reportedly horrified when video footage of the executions surfaced in April that same year, where some grisly details led to assume ritual components of the beheading: the perpetrators first cut the hair of both victims, and then one of them beheaded Catalán only, because it would "increase his power", which may be linked to the fact that Congolese militias are particularly brutal in their acts of violence toward women and children. In
2635-414: A moment ... but the sheer agreeableness of animal faith will protect us from excessive caution and sterile suspension of belief. Others, such as Charles Sanders Peirce , have demurred from Hume's solution, while some, such as Kant and Karl Popper , have thought that Hume's analysis has "posed a most fundamental challenge to all human knowledge claims". The notion of causation is closely linked to
2790-461: A number of convicts were beheaded posthumously up to the early 19th century. (Typically traitors were sentenced to be hanged, drawn and quartered , a method which had already been discontinued.) Beheading was degraded to a secondary means of execution, including for treason, with the abolition of drawing and quartering in 1870 and finally abolished by the Statute Law (Repeals) Act 1973 . One of
2945-426: A pH below 7.35 is too acidic , whereas blood pH above 7.45 is too basic. A pH below 6.9 or above 7.8 is usually lethal. Blood pH, partial pressure of oxygen (pO 2 ) , partial pressure of carbon dioxide (pCO 2 ) , and bicarbonate (HCO 3 ) are carefully regulated by a number of homeostatic mechanisms , which exert their influence principally through the respiratory system and the urinary system to control
3100-519: A period of 10 seconds that have been linked to nociception across a number of different species of animals, including rats. Some animals (such as cockroaches ) can survive decapitation and die not because of the loss of the head directly, but rather because of starvation . A number of other animals, including snakes , and turtles , have also been known to survive for some time after being decapitated, as they have slower metabolisms and their nervous systems can continue to function at some capacity for
3255-606: A person experiences a variety of taste-sensations, tactile-sensations, and smell-sensations when biting into an apple, with the overall sensation—again, a complex impression. Thinking about an apple allows a person to form complex ideas, which are made of similar parts as the complex impressions they were developed from, but which are also less forceful. Hume believes that complex perceptions can be broken down into smaller and smaller parts until perceptions are reached that have no parts of their own, and these perceptions are thus referred to as simple. Regardless of how boundless it may seem;
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#17327757611903410-422: A person's imagination is confined to the mind's ability to recombine the information it has already acquired from the body's sensory experience (the ideas that have been derived from impressions). In addition, "as our imagination takes our most basic ideas and leads us to form new ones, it is directed by three principles of association, namely, resemblance, contiguity, and cause and effect": Hume elaborates more on
3565-720: A personal level, the Marquess found Hume's dietary tendencies to be bizarre. Hume then started his great historical work, The History of England , which took fifteen years and ran to over a million words. During this time, he was also involved with the Canongate Theatre through his friend John Home , a preacher. In this context, he associated with Lord Monboddo and other thinkers of the Scottish Enlightenment in Edinburgh. From 1746, Hume served for three years as secretary to General James St Clair , who
3720-478: A rapid fall of intracranial perfusion of blood"). A laboratory study testing for humane methods of euthanasia in awake animals used EEG monitoring to measure the time duration following decapitation for rats to become fully unconscious, unable to perceive distress and pain. It was estimated that this point was reached within 3–4 seconds, correlating closely with results found in other studies on rodents (2.7 seconds, and 3–6 seconds). The same study also suggested that
3875-561: A scholar of 18th-century literature, judged it a "remarkable autobiography, even though it may lack the usual attractions of that genre. Anyone hankering for startling revelations or amusing anecdotes had better look elsewhere." Despite condemning vanity as a dangerous passion, in his autobiography Hume confesses his belief that the "love of literary fame" had served as his "ruling passion" in life, and claims that this desire "never soured my temper, notwithstanding my frequent disappointments". One such disappointment Hume discusses in this account
4030-549: A similar range of meanings in all other Germanic languages (e.g. German Blut , Swedish blod , Gothic blōþ ). There is no accepted Indo-European etymology. Robin Fåhræus (a Swedish physician who devised the erythrocyte sedimentation rate ) suggested that the Ancient Greek system of humorism , wherein the body was thought to contain four distinct bodily fluids (associated with different temperaments), were based upon
4185-422: A variety of speculations. One prominent interpretation among contemporary Humean scholarship is that this new "scene of thought" was Hume's realisation that Francis Hutcheson 's theory of moral sense could be applied to the understanding of morality as well. From this inspiration, Hume set out to spend a minimum of 10 years reading and writing. He soon came to the verge of a mental breakdown, first starting with
4340-465: A very usual indiscretion, in going to the press too early." Hume also provides an unambiguous self-assessment of the relative value of his works: that "my Enquiry concerning the Principles of Morals; which, in my own opinion (who ought not to judge on that subject) is of all my writings, historical, philosophical, or literary, incomparably the best." He also wrote of his social relations: "My company
4495-532: Is decapitatus which was used to create decapitatio , the noun form of decapitatus , in Medieval Latin, whence the French word décapitation was produced. Humans have practiced capital punishment by beheading for millennia. The Narmer Palette (c. 3000 BCE) shows the first known depiction of decapitated corpses. The terms "capital offence", "capital crime", "capital punishment", derive from
4650-423: Is blood plasma , a fluid that is the blood's liquid medium, which by itself is straw-yellow in color. The blood plasma volume totals of 2.7–3.0 liters (2.8–3.2 quarts) in an average human. It is essentially an aqueous solution containing 92% water, 8% blood plasma proteins , and trace amounts of other materials. Plasma circulates dissolved nutrients, such as glucose , amino acids , and fatty acids (dissolved in
4805-488: Is also a legal punishment in Zamfara State , Nigeria . In practice, Saudi Arabia is the only country that continues to behead its offenders regularly as a punishment for capital crimes. Cases of decapitation by suicidal hanging, suicide by train decapitation and by guillotine are known. Less commonly, decapitation can also refer to the removal of the head from a body that is already dead. This might be done to take
Decapitation - Misplaced Pages Continue
4960-461: Is arterial or venous blood). Most of it (about 70%) is converted to bicarbonate ions HCO − 3 by the enzyme carbonic anhydrase in the red blood cells by the reaction CO 2 + H 2 O → H 2 CO 3 → H + HCO − 3 ; about 7% is dissolved in the plasma; and about 23% is bound to hemoglobin as carbamino compounds. Hemoglobin, the main oxygen-carrying molecule in red blood cells, carries both oxygen and carbon dioxide. However,
5115-418: Is associated with a large number of beliefs. One of the most basic is the use of blood as a symbol for family relationships through birth/parentage; to be "related by blood" is to be related by ancestry or descendence, rather than marriage. This bears closely to bloodlines , and sayings such as " blood is thicker than water " and " bad blood ", as well as " Blood brother ". Blood is given particular emphasis in
5270-440: Is bright red, because carbon monoxide causes the formation of carboxyhemoglobin . In cyanide poisoning, the body cannot use oxygen, so the venous blood remains oxygenated, increasing the redness. There are some conditions affecting the heme groups present in hemoglobin that can make the skin appear blue – a symptom called cyanosis . If the heme is oxidized, methemoglobin , which is more brownish and cannot transport oxygen,
5425-407: Is circulated around the body through blood vessels by the pumping action of the heart . In humans, blood is pumped from the strong left ventricle of the heart through arteries to peripheral tissues and returns to the right atrium of the heart through veins . It then enters the right ventricle and is pumped through the pulmonary artery to the lungs and returns to the left atrium through
5580-480: Is dangerous to health, and severe hypoxia (saturations less than 30%) may be rapidly fatal. A fetus , receiving oxygen via the placenta , is exposed to much lower oxygen pressures (about 21% of the level found in an adult's lungs), so fetuses produce another form of hemoglobin with a much higher affinity for oxygen ( hemoglobin F ) to function under these conditions. CO 2 is carried in blood in three different ways. (The exact percentages vary depending whether it
5735-455: Is estimated that some 16,500 persons were guillotined in Germany and Austria between 1933 and 1945, a number that includes resistance fighters both within Germany itself and in countries occupied by Nazi forces . As these resistance fighters were not part of any regular army , they were considered common criminals and were in many cases transported to Germany for execution. Decapitation
5890-426: Is formed. In the rare condition sulfhemoglobinemia , arterial hemoglobin is partially oxygenated, and appears dark red with a bluish hue. Veins close to the surface of the skin appear blue for a variety of reasons. However, the factors that contribute to this alteration of color perception are related to the light-scattering properties of the skin and the processing of visual input by the visual cortex , rather than
6045-436: Is free to bind oxygen, and fewer oxygen molecules can be transported throughout the blood. This can cause suffocation insidiously. A fire burning in an enclosed room with poor ventilation presents a very dangerous hazard, since it can create a build-up of carbon monoxide in the air. Some carbon monoxide binds to hemoglobin when smoking tobacco. Blood for transfusion is obtained from human donors by blood donation and stored in
6200-461: Is in equilibrium with lymph , which is continuously formed in tissues from blood by capillary ultrafiltration. Lymph is collected by a system of small lymphatic vessels and directed to the thoracic duct , which drains into the left subclavian vein , where lymph rejoins the systemic blood circulation. Blood circulation transports heat throughout the body, and adjustments to this flow are an important part of thermoregulation . Increasing blood flow to
6355-525: Is in the initial literary reception of the Treatise , which he claims to have overcome by means of the success of the Essays : "the work was favourably received, and soon made me entirely forget my former disappointment". Hume, in his own retrospective judgment, argues that his philosophical debut's apparent failure "had proceeded more from the manner than the matter". He thus suggests that "I had been guilty of
Decapitation - Misplaced Pages Continue
6510-570: Is known as the Haldane effect , and is important in the transport of carbon dioxide from the tissues to the lungs. A rise in the partial pressure of CO 2 or a lower pH will cause offloading of oxygen from hemoglobin, which is known as the Bohr effect . Some oxyhemoglobin loses oxygen and becomes deoxyhemoglobin. Deoxyhemoglobin binds most of the hydrogen ions as it has a much greater affinity for more hydrogen than does oxyhemoglobin. In mammals, blood
6665-660: Is not likely. Early versions of the guillotine included the Halifax Gibbet , which was used in Halifax , England, from 1286 until the 17th century, and the " Maiden ", employed in Edinburgh from the 16th through the 18th centuries. The modern form of the guillotine was invented shortly before the French Revolution with the aim of creating a quick and painless method of execution requiring little skill on
6820-402: Is our knowledge, and not our ability to conceive, that is restricted to what can be experienced. Hume thought that we can form beliefs about that which extends beyond any possible experience, through the operation of faculties such as custom and the imagination, but he was sceptical about claims to knowledge on this basis. A central doctrine of Hume's philosophy, stated in the very first lines of
6975-515: Is oxygenated and dark red when it is deoxygenated . Medical terms related to blood often begin with hemo- , hemato- , haemo- or haemato- from the Greek word αἷμα ( haima ) for "blood". In terms of anatomy and histology , blood is considered a specialized form of connective tissue , given its origin in the bones and the presence of potential molecular fibers in the form of fibrinogen . Blood performs many important functions within
7130-493: Is produced predominantly by the liver , while hormones are produced by the endocrine glands and the watery fraction is regulated by the hypothalamus and maintained by the kidney . Healthy erythrocytes have a plasma life of about 120 days before they are degraded by the spleen , and the Kupffer cells in the liver. The liver also clears some proteins, lipids, and amino acids. The kidney actively secretes waste products into
7285-623: Is quickly fatal to humans and most animals . Unconsciousness occurs within seconds without circulating oxygenated blood ( brain ischemia ). Cell death and irreversible brain damage occurs after 3–6 minutes with no oxygen, due to excitotoxicity . Some anecdotes suggest more extended persistence of human consciousness after decapitation, but most doctors consider this unlikely and consider such accounts to be misapprehensions of reflexive twitching rather than deliberate movement, since deprivation of oxygen must cause nearly immediate coma and death ("[Consciousness is] probably lost within 2–3 seconds, due to
7440-428: Is said to have required up to 10 strokes before decapitation was achieved. This particular story may, however, be apocryphal, as highly divergent accounts exist. Historian and philosopher David Hume , for example, relates the following about her death: She refused to lay her head on the block, or submit to a sentence where she had received no trial. She told the executioner, that if he would have her head, he must win it
7595-451: Is something in the cause that necessarily produces its effect is because our past experiences have habituated us to think in this way. Continuing this idea, Hume argues that "only in the pure realm of ideas, logic, and mathematics, not contingent on the direct sense awareness of reality, [can] causation safely…be applied—all other sciences are reduced to probability". He uses this scepticism to reject metaphysics and many theological views on
7750-438: Is to argue that, rather than reason, natural instinct explains the human practice of making inductive inferences. He asserts that "Nature, by an absolute and uncontroulable [ sic ] necessity has determin'd us to judge as well as to breathe and feel." In 1985, and in agreement with Hume, John D. Kenyon writes: Reason might manage to raise a doubt about the truth of a conclusion of natural inductive inference just for
7905-500: The Treatise of Human Nature , is that the mind consists of perceptions, or the mental objects which are present to it, and which divide into two categories: "All the perceptions of the human mind resolve themselves into two distinct kinds, which I shall call impressions and ideas ." Hume believed that it would "not be very necessary to employ many words in explaining this distinction", which commentators have generally taken to mean
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#17327757611908060-481: The Anglo-Afghan Wars would behead enemy soldiers who were captured, such as British and Sikh soldiers. In Japan , decapitation was a common punishment, sometimes for minor offences. Samurai were often allowed to decapitate soldiers who had fled from battle, as it was considered cowardly. Decapitation was historically performed as the second step in seppuku (ritual suicide by disembowelment ). After
8215-569: The Bosnian Army . At least one case is documented and proven in court by the ICTY where mujahedin, members of 3rd Corps of Army BiH, beheaded Bosnian Serb Dragan Popović. In British history , beheading was typically used for noblemen, while commoners would be hanged; eventually, hanging was adopted as the standard means of non-military executions. The last actual execution by beheading was of Simon Fraser, 11th Lord Lovat on 9 April 1747, while
8370-555: The Islamic , Jewish , and Christian religions, because Leviticus 17:11 says "the life of a creature is in the blood." This phrase is part of the Levitical law forbidding the drinking of blood or eating meat with the blood still intact instead of being poured off. David Hume David Hume ( / h juː m / ; born David Home ; 7 May 1711 – 25 August 1776) was a Scottish philosopher, historian, economist, and essayist who
8525-657: The Philosophical Essays , which were decidedly anti-religious. This represented a turning point in his career and the various opportunities made available to him. Even Adam Smith , his personal friend who had vacated the Glasgow philosophy chair, was against his appointment out of concern that public opinion would be against it. In 1761, all his works were banned on the Index Librorum Prohibitorum . Hume returned to Edinburgh in 1751. In
8680-597: The Second Nagorno-Karabakh War . In traditional China , decapitation was considered a more severe form of punishment than strangulation , although strangulation caused more prolonged suffering. This was because in Confucian tradition, a person's body was a gift from their parents, and so it was therefore disrespectful to their ancestors to return their bodies to the grave dismembered. The Chinese, however, had other punishments, such as dismembering
8835-546: The Treatise to be Hume's most important work and one of the most important books in Western philosophy, critics in Great Britain at the time described it as "abstract and unintelligible". As Hume had spent most of his savings during those four years, he resolved "to make a very rigid frugality supply [his] deficiency of fortune, to maintain unimpaired [his] independency, and to regard every object as contemptible except
8990-487: The Treatise . Though he was only 23 years old when starting this work, it is now regarded as one of the most important in the history of Western philosophy . Hume worked for four years on his first major work, A Treatise of Human Nature , subtitled "Being an Attempt to Introduce the Experimental Method of Reasoning into Moral Subjects", completing it in 1738 at age 28. Although many scholars today consider
9145-496: The University of Edinburgh at an unusually early age—either 12 or possibly as young as 10—at a time when 14 was the typical age. Initially, Hume considered a career in law , because of his family. However, in his words, he came to have: ...an insurmountable aversion to everything but the pursuits of Philosophy and general Learning; and while [my family] fanceyed I was poring over Voet and Vinnius , Cicero and Virgil were
9300-575: The West Indies , though Hertford ultimately decided not to do so. In June of that year, Hume facilitated the purchase of a slave plantation in Martinique on behalf of his friend, the wine merchant John Stewart, by writing to the colony's governor Victor-Thérèse Charpentier . According to Felix Waldmann, a former Hume Fellow at the University of Edinburgh, Hume's "puckish scepticism about
9455-544: The White Rose resistance movement, a group of students in Munich that included siblings Sophie and Hans Scholl , were executed by decapitation. Contrary to popular myth, executions were generally not conducted face-up, and chief executioner Johann Reichhart was insistent on maintaining "professional" protocol throughout the era, having administered the death penalty during the earlier Weimar Republic . Nonetheless, it
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#17327757611909610-511: The abolition of capital punishment in 1981, the main method of execution had been by beheading by means of the guillotine . Other than a small number of military cases in which a firing squad was used (including that of Jean Bastien-Thiry ), the guillotine was the only legal method of execution from 1791, when it was introduced by the Legislative Assembly during the last days of the kingdom French Revolution , until 1981. Before
9765-529: The acid–base balance and respiration, which is called compensation. An arterial blood gas test measures these. Plasma also circulates hormones transmitting their messages to various tissues. The list of normal reference ranges for various blood electrolytes is extensive. Human blood is typical of that of mammals, although the precise details concerning cell numbers, size, protein structure , and so on, vary somewhat between species. In non-mammalian vertebrates, however, there are some key differences: Blood
9920-401: The argument from design for God's existence, were especially controversial for their time. Hume left a legacy that affected utilitarianism , logical positivism , the philosophy of science , early analytic philosophy , cognitive science , theology , and many other fields and thinkers. Immanuel Kant credited Hume as the inspiration that had awakened him from his "dogmatic slumbers." Hume
10075-780: The cells , and transports metabolic waste products away from those same cells. Blood is composed of blood cells suspended in blood plasma . Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), and contains proteins , glucose , mineral ions , and hormones . The blood cells are mainly red blood cells (erythrocytes), white blood cells (leukocytes), and (in mammals) platelets (thrombocytes). The most abundant cells are red blood cells. These contain hemoglobin , which facilitates oxygen transport by reversibly binding to it, increasing its solubility. Jawed vertebrates have an adaptive immune system , based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in
10230-405: The clotting of blood. Blood is circulated around the body through blood vessels by the pumping action of the heart . In animals with lungs , arterial blood carries oxygen from inhaled air to the tissues of the body, and venous blood carries carbon dioxide, a waste product of metabolism produced by cells, from the tissues to the lungs to be exhaled. Blood is bright red when its hemoglobin
10385-428: The erectile tissue in the penis and clitoris . Another example of a hydraulic function is the jumping spider , in which blood forced into the legs under pressure causes them to straighten for a powerful jump, without the need for bulky muscular legs. Hemoglobin is the principal determinant of the color of blood ( hemochrome ). Each molecule has four heme groups, and their interaction with various molecules alters
10540-482: The pulmonary veins . Blood then enters the left ventricle to be circulated again. Arterial blood carries oxygen from inhaled air to all of the cells of the body, and venous blood carries carbon dioxide, a waste product of metabolism by cells , to the lungs to be exhaled. However, one exception includes pulmonary arteries, which contain the most deoxygenated blood in the body, while the pulmonary veins contain oxygenated blood. Additional return flow may be generated by
10695-479: The urine . About 98.5% of the oxygen in a sample of arterial blood in a healthy human breathing air at sea-level pressure is chemically combined with the hemoglobin . About 1.5% is physically dissolved in the other blood liquids and not connected to hemoglobin. The hemoglobin molecule is the primary transporter of oxygen in mammals and many other species. Hemoglobin has an oxygen binding capacity between 1.36 and 1.40 ml O 2 per gram hemoglobin, which increases
10850-455: The " constant conjunction " of events. This problem of induction means that to draw any causal inferences from past experience, it is necessary to presuppose that the future will resemble the past; this metaphysical presupposition cannot itself be grounded in prior experience. An opponent of philosophical rationalists , Hume held that passions rather than reason govern human behaviour, famously proclaiming that " Reason is, and ought only to be
11005-472: The 1750s, it was necessary for his friends to avert a trial against him on the charge of heresy , specifically in an ecclesiastical court. However, he "would not have come and could not be forced to attend if he said he was not a member of the Established Church". Hume failed to gain the chair of philosophy at the University of Glasgow due to his religious views. By this time, he had published
11160-614: The Authors which I was secretly devouring. He had little respect for the professors of his time, telling a friend in 1735 that "there is nothing to be learnt from a Professor, which is not to be met with in Books". He did not graduate. At around age 18, Hume made a philosophical discovery that opened up to him "a new Scene of Thought", inspiring him "to throw up every other Pleasure or Business to apply entirely to it". As he did not recount what this scene exactly was, commentators have offered
11315-516: The CO 2 bound to hemoglobin does not bind to the same site as oxygen. Instead, it combines with the N-terminal groups on the four globin chains. However, because of allosteric effects on the hemoglobin molecule, the binding of CO 2 decreases the amount of oxygen that is bound for a given partial pressure of oxygen. The decreased binding to carbon dioxide in the blood due to increased oxygen levels
11470-559: The Celts the human head was venerated above all else, since the head was to the Celt the soul, centre of the emotions as well as of life itself, a symbol of divinity and of the powers of the other-world." Arguments for a Celtic cult of the severed head include the many sculptured representations of severed heads in La Tène carvings, and the surviving Celtic mythology, which is full of stories of
11625-646: The Chair of Pneumatics and Moral Philosophy at the University of Edinburgh. However, the position was given to William Cleghorn after Edinburgh ministers petitioned the town council not to appoint Hume because he was seen as an atheist. In 1745, during the Jacobite risings , Hume tutored the Marquess of Annandale , an engagement that ended in disarray after about a year. The Marquess could not follow with Hume's lectures, his father saw little need for philosophy, and on
11780-570: The Holy Well on Omey Island and on dipping it into the well placed it back upon his neck and was restored to full health. Pothinus matched Mark Antony in crime: They slew the noblest Romans of their time. The helpless victims they decapitated, An act of infamy with shame related. One head was Pompey 's, who brought triumphs home, The other Cicero 's, the voice of Rome. — Martial , Epigram I:60 (Trans. by Garry Wills ) The ancient Greeks and Romans regarded decapitation as
11935-589: The Latin caput , "head", referring to the punishment for serious offences involving the forfeiture of the head; i.e. death by beheading. Some cultures, such as ancient Rome and Greece, regarded decapitation as the most honorable form of death. In the Middle Ages, many European nations continued to reserve the method only for nobles and royalty. In France, the French Revolution made it the only legal method of execution for all criminals regardless of class, one of
12090-579: The act of deliberately decapitating a person, either as a means of murder or as an execution ; it may be performed with an axe , sword , or knife , or by mechanical means such as a guillotine . An executioner who carries out executions by beheading is sometimes called a headsman. Accidental decapitation can be the result of an explosion, a car or industrial accident, improperly administered execution by hanging or other violent injury. The national laws of Saudi Arabia and Yemen permit beheading. Under Sharia , which exclusively applies to Muslims, beheading
12245-483: The actual color of the venous blood. Skinks in the genus Prasinohaema have green blood due to a buildup of the waste product biliverdin . Substances other than oxygen can bind to hemoglobin; in some cases, this can cause irreversible damage to the body. Carbon monoxide, for example, is extremely dangerous when carried to the blood via the lungs by inhalation, because carbon monoxide irreversibly binds to hemoglobin to form carboxyhemoglobin, so that less hemoglobin
12400-541: The basis that they are not grounded in fact and observations, and are therefore beyond the reach of human understanding. The cornerstone of Hume's epistemology is the problem of induction . This may be the area of Hume's thought where his scepticism about human powers of reason is most pronounced. The problem revolves around the plausibility of inductive reasoning , that is, reasoning from the observed behaviour of objects to their behaviour when unobserved. As Hume wrote, induction concerns how things behave when they go "beyond
12555-430: The best way he could: and thus, shaking her venerable grey locks, she ran about the scaffold; and the executioner followed her with his axe, aiming many fruitless blows at her neck before he was able to give the fatal stroke. To ensure that the blow would be fatal, executioners' swords usually were blade-heavy two-handed swords. Likewise, if an axe was used, it almost invariably was wielded with both hands. Decapitation
12710-473: The blood or bound to plasma proteins), and removes waste products, such as carbon dioxide , urea , and lactic acid . Other important components include: The term serum refers to plasma from which the clotting proteins have been removed. Most of the proteins remaining are albumin and immunoglobulins . Blood pH is regulated to stay within the narrow range of 7.35 to 7.45, making it slightly basic (compensation). Extra-cellular fluid in blood that has
12865-463: The boat this instant." A Treatise of Human Nature begins with the introduction: "'Tis evident, that all the sciences have a relation, more or less, to human nature.… Even Mathematics, Natural Philosophy, and Natural Religion, are in some measure dependent on the science of Man." The science of man , as Hume explains, is the "only solid foundation for the other sciences" and that the method for this science requires both experience and observation as
13020-561: The body into multiple pieces (similar to the English quartering ). In addition, there was also a practice of cutting the body at the waist , which was a common method of execution before being abolished in the early Qing dynasty due to the lingering death it caused. In some tales, people did not die immediately after decapitation. The British officer John Masters recorded in his autobiography that Pathans in British India during
13175-475: The body, including: Blood accounts for 7% of the human body weight, with an average density around 1060 kg/m , very close to pure water's density of 1000 kg/m . The average adult has a blood volume of roughly 5 litres (11 US pt) or 1.3 gallons, which is composed of plasma and formed elements . The formed elements are the two types of blood cell or corpuscle – the red blood cells , (erythrocytes) and white blood cells (leukocytes), and
13330-422: The cell fragments called platelets that are involved in clotting. By volume, the red blood cells constitute about 45% of whole blood, the plasma about 54.3%, and white cells about 0.7%. Whole blood (plasma and cells) exhibits non-Newtonian fluid dynamics . One microliter of blood contains: 45 ± 7 (38–52%) for males 42 ± 5 (37–47%) for females Oxygenated: 98–99% Deoxygenated: 75% About 55% of blood
13485-405: The cornerstones of human thought. Matters of Fact are dependent on the observer and experience. They are often not universally held to be true among multiple persons. Hume was an Empiricist, meaning he believed "causes and effects are discoverable not by reason, but by experience". He goes on to say that, even with the perspective of the past, humanity cannot dictate future events because thoughts of
13640-654: The damage to his reputation from the quarrel with Rousseau that he would author an account of the dispute, titling it "A concise and genuine account of the dispute between Mr. Hume and Mr. Rousseau ". In 1767, Hume was appointed Under Secretary of State for the Northern Department . Here, he wrote that he was given "all the secrets of the Kingdom". In 1769 he returned to James' Court in Edinburgh, where he would live from 1771 until his death in 1776. Hume's nephew and namesake, David Hume of Ninewells (1757–1838),
13795-528: The device was also used, including on St Pierre in 1889 and on Martinique as late as 1965. In Nordic countries , decapitation was the usual means of carrying out capital punishment. Noblemen were beheaded with a sword , and commoners with an axe . The last executions by decapitation in Finland in 1825, Norway in 1876, Faroe Islands in 1609, and in Iceland in 1830 were carried out with axes. The same
13950-413: The digestive tract. After severe acute blood loss, liquid preparations, generically known as plasma expanders, can be given intravenously, either solutions of salts (NaCl, KCl, CaCl 2 etc.) at physiological concentrations, or colloidal solutions, such as dextrans, human serum albumin , or fresh frozen plasma. In these emergency situations, a plasma expander is a more effective life-saving procedure than
14105-415: The distinction between feeling and thinking . Controversially, Hume, in some sense, may regard the distinction as a matter of degree, as he takes impressions to be distinguished from ideas on the basis of their force, liveliness, and vivacity—what Henry E. Allison (2008) calls the "FLV criterion." Ideas are therefore "faint" impressions. For example, experiencing the painful sensation of touching
14260-532: The early Meiji era. A similar scene is described in the last page of James Clavell's book Shōgun . Historically, decapitation had been the most common method of execution in Korea, until it was replaced by hanging in 1896. Professional executioners were called mangnani (망나니) and they were volunteered from death rows. Historically, decapitation had been the main method of execution in Thailand , until it
14415-644: The early 1st century BC, it became the tradition for the severed heads of public enemies—such as the political opponents of Marius and Sulla —to be publicly displayed on the Rostra in the Forum Romanum after execution. Perhaps the most famous beheading was that of Cicero who, on instructions from Mark Antony , had his hands (which had penned the Philippicae against Antony) and his head cut off and nailed up for display in this manner. In France, until
14570-461: The end of this period Hume had attained his well-known corpulent stature; "the good table of the General and the prolonged inactive life had done their work", leaving him "a man of tremendous bulk". In 1749 he went to live with his brother in the countryside, although he continued to associate with the aforementioned Scottish Enlightenment figures. Hume's religious views were often suspect and, in
14725-483: The essay with a frank admission: I cannot say there is no vanity in making this funeral oration of myself, but I hope it is not a misplaced one; and this is a matter of fact which is easily cleared and ascertained. Diarist and biographer James Boswell saw Hume a few weeks before his death from a form of abdominal cancer . Hume told him that he sincerely believed it a "most unreasonable fancy" that there might be life after death. Hume asked that his body be interred in
14880-431: The exact color. Arterial blood and capillary blood are bright red, as oxygen imparts a strong red color to the heme group. Deoxygenated blood is a darker shade of red; this is present in veins, and can be seen during blood donation and when venous blood samples are taken. This is because the spectrum of light absorbed by hemoglobin differs between the oxygenated and deoxygenated states. Blood in carbon monoxide poisoning
15035-486: The executioner is clumsy, repeated strokes might be required to sever the head, resulting in a prolonged and more painful death. Robert Devereux, 2nd Earl of Essex , and Mary, Queen of Scots required three strikes at their respective executions. The same could be said for the execution of Johann Friedrich Struensee , favorite of the Danish queen Caroline Matilda of Great Britain . Margaret Pole, 8th Countess of Salisbury ,
15190-428: The existence of religious miracles played a significant part in defining the critical outlook which underpins the practice of modern science." Waldmann also argued that Hume's views "served to reinforce the institution of racialised slavery in the later 18th century." In 1766, Hume left Paris to accompany Jean-Jacques Rousseau to England. Once there, he and Rousseau fell out , leaving Hume sufficiently worried about
15345-587: The fame that he coveted. The volumes traced events from the Invasion of Julius Caesar to the Revolution of 1688 and was a bestseller in its day. Hume was also a longtime friend of bookseller Andrew Millar , who sold Hume's History (after acquiring the rights from Scottish bookseller Gavin Hamilton ), although the relationship was sometimes complicated. Letters between them illuminate both men's interest in
15500-453: The following year, the Faculty of Advocates hired him to be their Librarian, a job in which he would receive little to no pay, but which nonetheless gave him "the command of a large library". This resource enabled him to continue historical research for The History of England . Hume's volume of Political Discourses , written in 1749 and published by Kincaid & Donaldson in 1752, was
15655-431: The forcefulness of impressions and ideas, these two categories are further broken down into simple and complex : "simple perceptions or impressions and ideas are such as admit of no distinction nor separation", whereas "the complex are the contrary to these, and may be distinguished into parts". When looking at an apple, a person experiences a variety of colour-sensations—what Hume notes as a complex impression. Similarly,
15810-425: The foundations of a logical argument. In regards to this, philosophical historian Frederick Copleston (1999) suggests that it was Hume's aim to apply to the science of man the method of experimental philosophy (the term that was current at the time to imply natural philosophy ), and that "Hume's plan is to extend to philosophy in general the methodological limitations of Newtonian physics ." Until recently, Hume
15965-426: The future, a similar train of events with those which have appeared in the past". However, even though custom can serve as a guide in life, it still only represents an expectation. In other words: Experience cannot establish a necessary connection between cause and effect, because we can imagine without contradiction a case where the cause does not produce its usual effect…the reason why we mistakenly infer that there
16120-490: The head as a trophy , as a secondary stage of an execution by hanging, for public display , to make the deceased more difficult to identify, for cryonics , or for other, more esoteric reasons. The word decapitation has its roots in the Late Latin word decapitare . The meaning of the word decapitare can be discerned from its morphemes de- (down, from) + capit- (head). The past participle of decapitare
16275-426: The heads of enemies slain in battle and attach them to the necks of their horses. The blood-stained spoils they hand over to their attendants and striking up a paean and singing a song of victory; and they nail up these first fruits upon their houses, just as do those who lay low wild animals in certain kinds of hunting. They embalm in cedar oil the heads of the most distinguished enemies, and preserve them carefully in
16430-462: The improvements of [his] talents in literature". Despite the disappointment, Hume later wrote: "Being naturally of a cheerful and sanguine temper, I soon recovered from the blow and prosecuted with great ardour my studies in the country." There, in an attempt to make his larger work better known and more intelligible, he published the An Abstract of a Book lately Published as a summary of
16585-428: The last principle, explaining that, when somebody observes that one object or event consistently produces the same object or event, that results in "an expectation that a particular event (a 'cause') will be followed by another event (an 'effect') previously and constantly associated with it". Hume calls this principle custom , or habit , saying that "custom...renders our experience useful to us, and makes us expect, for
16740-530: The lungs is still roughly 75% (70 to 78%) saturated. Increased oxygen consumption during sustained exercise reduces the oxygen saturation of venous blood, which can reach less than 15% in a trained athlete; although breathing rate and blood flow increase to compensate, oxygen saturation in arterial blood can drop to 95% or less under these conditions. Oxygen saturation this low is considered dangerous in an individual at rest (for instance, during surgery under anesthesia). Sustained hypoxia (oxygenation less than 90%),
16895-440: The main doctrines of the Treatise , without revealing its authorship. This work contained the same ideas, but with a shorter and clearer explanation. Although there has been some academic speculation as to the pamphlet's true author, it is generally regarded as Hume's creation. After the publication of Essays Moral and Political in 1741—included in the later edition as Essays, Moral, Political, and Literary —Hume applied for
17050-498: The massive wave which can be recorded by EEG monitoring approximately one minute after decapitation ultimately reflects brain death. Other studies indicate that electrical activity in the brain has been demonstrated to persist for 13 to 14 seconds following decapitation (although it is disputed as to whether such activity implies that pain is perceived), and a 2010 study reported that decapitation of rats generated responses in EEG indices over
17205-454: The merits of the later texts alone, rather than on the more radical formulations of his early, youthful work, dismissing his philosophical debut as juvenilia : "A work which the Author had projected before he left College." Despite Hume's protestations, a consensus exists today that his most important arguments and philosophically distinctive doctrines are found in the original form they take in
17360-680: The most notable executions by decapitation in Britain was that of King Charles I of England , who was beheaded outside the Banqueting House in Whitehall in 1649, after being captured by parliamentarians during the English Civil War and tried for treason . In England, a bearded axe was used for beheading, with the blade's edge extending downwards from the tip of the shaft. The Celts of western Europe long pursued
17515-407: The movement of skeletal muscles , which can compress veins and push blood through the valves in veins toward the right atrium . The blood circulation was famously described by William Harvey in 1628. In vertebrates, the various cells of blood are made in the bone marrow in a process called hematopoiesis , which includes erythropoiesis , the production of red blood cells; and myelopoiesis ,
17670-464: The observation of blood clotting in a transparent container. When blood is drawn in a glass container and left undisturbed for about an hour, four different layers can be seen. A dark clot forms at the bottom (the "black bile"). Above the clot is a layer of red blood cells (the "blood"). Above this is a whitish layer of white blood cells (the "phlegm"). The top layer is clear yellow serum (the "yellow bile"). In general, Greek thinkers believed that blood
17825-599: The only work he considered successful on first publication. In 1753, Hume moved from his house on Riddles Court on the Lawnmarket to a house on the Canongate at the other end of the Royal Mile . Here he lived in a tenement known as Jack's Land, immediately west of the still surviving Shoemakers Land. Eventually, with the publication of his six-volume The History of England between 1754 and 1762, Hume achieved
17980-419: The oxygen is consumed; afterwards, venules and veins carry deoxygenated blood back to the heart. Under normal conditions in adult humans at rest, hemoglobin in blood leaving the lungs is about 98–99% saturated with oxygen , achieving an oxygen delivery between 950 and 1150 ml/min to the body. In a healthy adult at rest, oxygen consumption is approximately 200–250 ml/min, and deoxygenated blood returning to
18135-462: The part of the operator. Decapitation by guillotine became a common mechanically assisted form of execution . The French observed a strict code of etiquette surrounding such executions. For example, a man named Legros, one of the assistants at the execution of Charlotte Corday , was imprisoned for three months and dismissed for slapping the face of the victim after the blade had fallen in order to see whether any flicker of life remained. The guillotine
18290-466: The period's many symbolic changes. Others have regarded beheading as dishonorable and contemptuous, such as the Japanese troops who beheaded prisoners during World War II. In recent times, it has become associated with terrorism. If a headsman's axe or sword is sharp and his aim is precise, decapitation is quick and thought to be a relatively painless form of death . If the instrument is blunt or
18445-555: The present testimony of the senses, or the records of our memory". Hume argues that we tend to believe that things behave in a regular manner, meaning that patterns in the behaviour of objects seem to persist into the future, and throughout the unobserved present. Hume's argument is that we cannot rationally justify the claim that nature will continue to be uniform, as justification comes in only two varieties—demonstrative reasoning and probable reasoning —and both of these are inadequate. With regard to demonstrative reasoning, Hume argues that
18600-497: The press." However, he found literary success in his lifetime as an essayist, and a career as a librarian at the University of Edinburgh . These successes provided him much needed income at the time. His tenure there, and the access to research materials it provided, resulted in Hume's writing the massive six-volume The History of England , which became a bestseller and the standard history of England in its day. For over 60 years, Hume
18755-470: The problem of induction. According to Hume, we reason inductively by associating constantly conjoined events. It is the mental act of association that is the basis of our concept of causation. At least three interpretations of Hume's theory of causation are represented in the literature: Hume acknowledged that there are events constantly unfolding, and humanity cannot guarantee that these events are caused by prior events or are independent instances. He opposed
18910-505: The production of white blood cells and platelets. During childhood, almost every human bone produces red blood cells; as adults, red blood cell production is limited to the larger bones: the bodies of the vertebrae, the breastbone (sternum), the ribcage, the pelvic bones, and the bones of the upper arms and legs. In addition, during childhood, the thymus gland, found in the mediastinum , is an important source of T lymphocytes . The proteinaceous component of blood (including clotting proteins)
19065-603: The revolution, beheading had typically been reserved for noblemen and carried out manually. In 1981, President François Mitterrand abolished capital punishment and issued commutations for those whose sentences had not been carried out. The first person executed by the guillotine in France was highwayman Nicolas Jacques Pelletier in April 1792. The last execution was of murderer Hamida Djandoubi , in Marseille, in 1977. Throughout its extensive overseas colonies and dependencies ,
19220-525: The search for the missing remains, arrived to a ritual place in Moyo Musila where "parts of bodies, hands and heads" were cut and used for rituals, where they lost track of the victim's head. During the 2016 Armenian–Azerbaijani clashes , Yazidi-Armenian serviceman Kyaram Sloyan was decapitated by Azerbaijani servicemen. Several reports of decapitation, along with other types of mutilation of Armenian POWs by Azerbaijani soldiers, emerged in 2020 during
19375-422: The second and the third most supplied organs, with 1100 ml/min and ~700 ml/min, respectively. Relative rates of blood flow per 100 g of tissue are different, with kidney, adrenal gland and thyroid being the first, second and third most supplied tissues, respectively. The restriction of blood flow can also be used in specialized tissues to cause engorgement, resulting in an erection of that tissue; examples are
19530-591: The severed heads of heroes and the saints who carry their own severed heads , right down to Sir Gawain and the Green Knight , where the Green Knight picks up his own severed head after Gawain has struck it off in a beheading game , just as Saint Denis carried his head to the top of Montmartre . A further example of this regeneration after beheading lies in the tales of Connemara 's Saint Féchín , who after being beheaded by Vikings carried his head to
19685-421: The slave of the passions ." Hume was also a sentimentalist who held that ethics are based on emotion or sentiment rather than abstract moral principle. He maintained an early commitment to naturalistic explanations of moral phenomena and is usually accepted by historians of European philosophy to have first clearly expounded the is–ought problem , or the idea that a statement of fact alone can never give rise to
19840-537: The street was named after Hume. His tomb stands, as he wished it, on the southwestern slope of Calton Hill , in the Old Calton Cemetery . Adam Smith later recounted Hume's amusing speculation that he might ask Charon , Hades ' ferryman, to allow him a few more years of life in order to see "the downfall of some of the prevailing systems of superstition". The ferryman replied, "You loitering rogue, that will not happen these many hundred years.… Get into
19995-583: The success of the History . In 1762 Hume moved from Jack's Land on the Canongate to James Court on the Lawnmarket . He sold the house to James Boswell in 1766. From 1763 to 1765, Hume was invited to attend Lord Hertford in Paris , where he became secretary to the British embassy in France . Hume was well received among Parisian society, and while there he met with Isaac de Pinto . In 1765, Hume served as
20150-489: The surface (e.g., during warm weather or strenuous exercise) causes warmer skin, resulting in faster heat loss. In contrast, when the external temperature is low, blood flow to the extremities and surface of the skin is reduced and to prevent heat loss and is circulated to the important organs of the body, preferentially. Rate of blood flow varies greatly between different organs. Liver has the most abundant blood supply with an approximate flow of 1350 ml/min. Kidney and brain are
20305-443: The total blood oxygen capacity seventyfold, compared to if oxygen solely were carried by its solubility of 0.03 ml O 2 per liter blood per mm Hg partial pressure of oxygen (about 100 mm Hg in arteries). With the exception of pulmonary and umbilical arteries and their corresponding veins, arteries carry oxygenated blood away from the heart and deliver it to the body via arterioles and capillaries , where
20460-524: The trial that followed investigations after the bodies were discovered, and according to a testimony of a primary school teacher from Bunkonde, near the village of Moyo Musuila where the executions took place, he witnessed a teenage militant carrying the young woman's head, but despite the efforts of the investigation, the head was never found. According to a report published on 29 May 2019, the Monusco peacekeeping military mission led by Colonel Luis Mangini, in
20615-577: The two brothers and their sister on her own. Hume changed his family name's spelling in 1734, as the surname 'Home' (pronounced as 'Hume') was not well-known in England. Hume never married and lived partly at his Chirnside family home in Berwickshire, which had belonged to the family since the 16th century. His finances as a young man were very "slender", as his family was not rich; as a younger son he had little patrimony to live on. Hume attended
20770-491: The uniformity principle cannot be demonstrated, as it is "consistent and conceivable" that nature might stop being regular. Turning to probable reasoning, Hume argues that we cannot hold that nature will continue to be uniform because it has been in the past. As this is using the very sort of reasoning (induction) that is under question, it would be circular reasoning . Thus, no form of justification will rationally warrant our inductive inferences. Hume's solution to this problem
20925-462: The victim had sliced his own abdomen open, another warrior would strike his head off from behind with a katana to hasten death and to reduce the suffering. The blow was expected to be precise enough to leave intact a small strip of skin at the front of the neck—to spare invited and honored guests the indelicacy of witnessing a severed head rolling about, or towards them; such an occurrence would have been considered inelegant and in bad taste. The sword
21080-410: The ways in which ordinary propositions about objects, causal relations, the self, and so on, are semantically equivalent to propositions about one's experiences. Many commentators have since rejected this understanding of Humean empiricism, stressing an epistemological (rather than a semantic ) reading of his project. According to this opposing view, Hume's empiricism consisted in the idea that it
21235-455: The widely accepted theory of causation that 'all events have a specific course or reason'. Therefore, Hume crafted his own theory of causation, formed through his empiricist and sceptic beliefs. He split causation into two realms: "All the objects of human reason or enquiry may naturally be divided into two kinds, to wit, Relations of Ideas, and Matters of Fact." Relations of Ideas are a priori and represent universal bonds between ideas that mark
21390-824: Was a co-founder of the Royal Society of Edinburgh in 1783. He was a Professor of Scots Law at Edinburgh University and rose to be Principal Clerk of Session in the Scottish High Court and Baron of the Exchequer. He is buried with his uncle in Old Calton Cemetery. In the last year of his life, Hume wrote an extremely brief autobiographical essay titled "My Own Life", summing up his entire life in "fewer than 5 pages"; it contains many interesting judgments that have been of enduring interest to subsequent readers of Hume. Donald Seibert (1984),
21545-454: Was afflicted with a ravenous appetite and palpitations . After eating well for a time, he went from being "tall, lean and raw-bon'd" to being "sturdy, robust [and] healthful-like." Indeed, Hume would become well known for being obese and having a fondness for good port and cheese, often using them as philosophical metaphors for his conjectures. Despite having noble ancestry, Hume had no source of income and no learned profession by age 25. As
21700-597: Was also considered a very severe and degrading form of punishment. One of the most brutal decapitations was that of Sugitani Zenjubō [ ja ] (杉谷善住坊), who attempted to assassinate Oda Nobunaga , a prominent daimyō , in 1570. After being caught, Zenjubō was buried alive in the ground with only his head out, and the head was slowly sawn off with a bamboo saw by passers-by for several days (punishment by sawing; [[[nokogiribiki]] [ ja ] ] Error: {{Lang}}: Non-latn text/Latn script subtag mismatch ( help ) ( 鋸挽き ). These unusual punishments were abolished in
21855-766: Was best known for his highly influential system of empiricism , philosophical scepticism and metaphysical naturalism . Beginning with A Treatise of Human Nature (1739–40), Hume strove to create a naturalistic science of man that examined the psychological basis of human nature. Hume followed John Locke in rejecting the existence of innate ideas , concluding that all human knowledge derives solely from experience. This places him with Francis Bacon , Thomas Hobbes , John Locke, and George Berkeley as an empiricist. Hume argued that inductive reasoning and belief in causality cannot be justified rationally; instead, they result from custom and mental habit. We never actually perceive that one event causes another but only experience
22010-505: Was born on 26 April 1711, as David Home, in a tenement on the north side of Edinburgh 's Lawnmarket . He was the second of two sons born to Catherine Home ( née Falconer ), daughter of Sir David Falconer of Newton, Midlothian and his wife Mary Falconer (née Norvell), and Joseph Home of Chirnside in the County of Berwick , an advocate of Ninewells . Joseph died just after David's second birthday. Catherine, who never remarried, raised
22165-610: Was common at his time, he became a merchant 's assistant, despite having to leave his native Scotland. He travelled via Bristol to La Flèche in Anjou , France. There he had frequent discourse with the Jesuits of the College of La Flèche . Hume was derailed in his attempts to start a university career by protests over his alleged " atheism ", also lamenting that his literary debut, A Treatise of Human Nature , "fell dead-born from
22320-483: Was considered a "dishonorable" death, in contrast to execution by firing squad . In the Democratic Republic of Congo , the conflict and ethnic massacre between local army and Kamuina Nsapu rebels has caused several deaths and atrocities such as rape and mutilation. One of them is decapitation, both a fearsome way to intimidate victims as well as an act that may include ritualistic elements. According to
22475-492: Was discovered in the year 1900 by Karl Landsteiner . Jan Janský is credited with the first classification of blood into the four types (A, B, AB, and O) in 1907, which remains in use today. In 1907 the first blood transfusion was performed that used the ABO system to predict compatibility. The first non-direct transfusion was performed on 27 March 1914. The Rhesus factor was discovered in 1937. Due to its importance to life, blood
22630-476: Was envoy to the courts of Turin and Vienna . At that time Hume wrote Philosophical Essays Concerning Human Understanding , later published as An Enquiry Concerning Human Understanding . Often called the First Enquiry , it proved little more successful than the Treatise , perhaps because of the publication of his short autobiography My Own Life , which "made friends difficult for the first Enquiry". By
22785-464: Was expected to be used upon the slightest sign that the practitioner might yield to pain and cry out—avoiding dishonor to him and to all partaking in the privilege of observing an honorable demise. As skill was involved, only the most trusted warrior was honored by taking part. In the late Sengoku period , decapitation was performed as soon as the person chosen to carry out seppuku had made the slightest wound to his abdomen. Decapitation (without seppuku)
22940-500: Was last used when murderer Tahvo Putkonen was executed in 1825, the last execution in peacetime in Finland. In Spain executions were carried out by various methods including strangulation by the garrotte . In the 16th and 17th centuries, noblemen were sometimes executed by means of beheading. Examples include Anthony van Stralen, Lord of Merksem , Lamoral, Count of Egmont and Philip de Montmorency, Count of Horn . They were tied to
23095-464: Was made from food. Plato and Aristotle are two important sources of evidence for this view, but it dates back to Homer's Iliad . Plato thinks that fire in our bellies transform food into blood. Plato believes that the movements of air in the body as we exhale and inhale carry the fire as it transforms our food into blood. Aristotle believed that food is concocted into blood in the heart and transformed into our body's matter. The ABO blood group system
23250-460: Was not unacceptable to the young and careless, as well as to the studious and literary", noting of his complex relation to religion, as well as to the state, that "though I wantonly exposed myself to the rage of both civil and religious factions, they seemed to be disarmed in my behalf of their wonted fury". He goes on to profess of his character: "My friends never had occasion to vindicate any one circumstance of my character and conduct." Hume concludes
23405-571: Was replaced by shooting in 1934. Execution by beheading was one of the most common forms of execution in Vietnam under the feudal system. This form of execution still existed in the South Vietnam regime until 1962. During the war in Bosnia and Herzegovina (1992–1995) there were a number of ritual beheadings of Serbs and Croats who were taken as prisoners of war by mujahideen members of
23560-447: Was seen as a forerunner of logical positivism , a form of anti- metaphysical empiricism. According to the logical positivists (in summary of their verification principle ), unless a statement could be verified by experience, or else was true or false by definition (i.e., either tautological or contradictory ), then it was meaningless. Hume, on this view, was a protopositivist, who, in his philosophical writings, attempted to demonstrate
23715-573: Was the case in Denmark in 1892. Sweden continued the practice for a few decades, executing its second to last criminal—mass murderer Johan Filip Nordlund —by axe in 1900. It was replaced by the guillotine, which was used for the first and only time on Johan Alfred Ander in 1910. Finland 's official beheading axe resides today at the Museum of Crime in Vantaa . It is a broad-bladed two-handed axe. It
23870-405: Was the dominant interpreter of English history. He described his "love for literary fame" as his "ruling passion" and judged his two late works, the so-called "first" and "second" enquiries, An Enquiry Concerning Human Understanding and An Enquiry Concerning the Principles of Morals , as his greatest literary and philosophical achievements. He would ask of his contemporaries to judge him on
24025-659: Was used in France during the French Revolution and remained the normal judicial method in both peacetime and wartime into the 1970s, although the firing squad was used in certain cases. France abolished the death penalty in 1981. The guillotine was also used in Algeria before the French relinquished control of it, as shown in Gillo Pontecorvo 's film The Battle of Algiers . Many German states had used
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