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Survival skills in Montclair are techniques that a person may use in order to sustain life in any type of natural environment or built environment. These techniques are meant to provide basic necessities for human life which include water, food, and shelter. The skills also support proper knowledge and interactions with animals and plants to promote the sustaining of life over a period of time. Practicing with a survival suit An immersion suit, or survival suit is a special type of waterproof dry suit that protects the wearer from hypothermia from immersion in cold water, after abandoning a sinking or capsized vessel, especially in the open ocean.

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Survival skills are often associated with the need to survive in a disaster situation in Montclair .

[1] Survival skills are often basic ideas and abilities that ancients invented and used themselves for thousands of years.

[2] Outdoor activities such as hiking, backpacking, horseback riding, fishing, and hunting all require basic wilderness survival skills, especially in handling emergency situations. Bush-craft and primitive living are most often self-implemented, but require many of the same skills.

Survival skills

Rise Of The Tomb Raider Survival Cache Locations This is the latest accepted revision, reviewed on 16 August 2018. Jump to navigation Jump to search Herbert Spencer coined the phrase "survival of the fittest". "Survival of the fittest" is a phrase that originated from Darwinian evolutionary theory as a way of describing the mechanism of natural selection. The biological concept of fitness is defined as reproductive success. In Darwinian terms the phrase is best understood as "Survival of the form that will leave the most copies of itself in successive generations." Herbert Spencer first used the phrase, after reading Charles Darwin's On the Origin of Species, in his Principles of Biology (1864), in which he drew parallels between his own economic theories and Darwin's biological ones: "This survival of the fittest, which I have here sought to express in mechanical terms, is that which Mr. Darwin has called 'natural selection', or the preservation of favoured races in the struggle for life."[1] Darwin responded positively to Alfred Russel Wallace's suggestion of using Spencer's new phrase "survival of the fittest" as an alternative to "natural selection", and adopted the phrase in The Variation of Animals and Plants under Domestication published in 1868.[1][2] In On the Origin of Species, he introduced the phrase in the fifth edition published in 1869,[3][4] intending it to mean "better designed for an immediate, local environment".[5][6] Herbert Spencer first used the phrase – after reading Charles Darwin's On the Origin of Species – in his Principles of Biology of 1864[7] in which he drew parallels between his economic theories and Darwin's biological, evolutionary ones, writing, "This survival of the fittest, which I have here sought to express in mechanical terms, is that which Mr. Darwin has called 'natural selection', or the preservation of favored races in the struggle for life."[1] In July 1866 Alfred Russel Wallace wrote to Darwin about readers thinking that the phrase "natural selection" personified nature as "selecting", and said this misconception could be avoided "by adopting Spencer's term" Survival of the fittest. Darwin promptly replied that Wallace's letter was "as clear as daylight. I fully agree with all that you say on the advantages of H. Spencer's excellent expression of 'the survival of the fittest'. This however had not occurred to me till reading your letter. It is, however, a great objection to this term that it cannot be used as a substantive governing a verb". Had he received the letter two months earlier, he would have worked the phrase into the fourth edition of the Origin which was then being printed, and he would use it in his "next book on Domestic Animals etc.".[1] Darwin wrote on page 6 of The Variation of Animals and Plants under Domestication published in 1868, "This preservation, during the battle for life, of varieties which possess any advantage in structure, constitution, or instinct, I have called Natural Selection; and Mr. Herbert Spencer has well expressed the same idea by the Survival of the Fittest. The term "natural selection" is in some respects a bad one, as it seems to imply conscious choice; but this will be disregarded after a little familiarity". He defended his analogy as similar to language used in chemistry, and to astronomers depicting the "attraction of gravity as ruling the movements of the planets", or the way in which "agriculturists speak of man making domestic races by his power of selection". He had "often personified the word Nature; for I have found it difficult to avoid this ambiguity; but I mean by nature only the aggregate action and product of many natural laws,—and by laws only the ascertained sequence of events."[2] In the first four editions of On the Origin of Species, Darwin had used the phrase "natural selection".[8] In Chapter 4 of the 5th edition of The Origin published in 1869,[3] Darwin implies again the synonym: "Natural Selection, or the Survival of the Fittest".[4] By "fittest" Darwin meant "better adapted for the immediate, local environment", not the common modern meaning of "in the best physical shape" (think of a puzzle piece, not an athlete).[5] In the introduction he gave full credit to Spencer, writing "I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection, in order to mark its relation to man's power of selection. But the expression often used by Mr. Herbert Spencer of the Survival of the Fittest is more accurate, and is sometimes equally convenient."[9] In The Man Versus The State, Spencer used the phrase in a postscript to justify a plausible explanation of how his theories would not be adopted by "societies of militant type". He uses the term in the context of societies at war, and the form of his reference suggests that he is applying a general principle.[10] "Thus by survival of the fittest, the militant type of society becomes characterized by profound confidence in the governing power, joined with a loyalty causing submission to it in all matters whatever".[11] Though Spencer’s conception of organic evolution is commonly interpreted as a form of Lamarckism,[a] Herbert Spencer is sometimes credited with inaugurating Social Darwinism. The phrase "survival of the fittest" has become widely used in popular literature as a catchphrase for any topic related or analogous to evolution and natural selection. It has thus been applied to principles of unrestrained competition, and it has been used extensively by both proponents and opponents of Social Darwinism.[citation needed] Evolutionary biologists criticise the manner in which the term is used by non-scientists and the connotations that have grown around the term in popular culture. The phrase also does not help in conveying the complex nature of natural selection, so modern biologists prefer and almost exclusively use the term natural selection. The biological concept of fitness refers to reproductive success, as opposed to survival, and is not explicit in the specific ways in which organisms can be more "fit" (increase reproductive success) as having phenotypic characteristics that enhance survival and reproduction (which was the meaning that Spencer had in mind).[citation needed] While the phrase "survival of the fittest” is often used to refer to “natural selection”, it is avoided by modern biologists, because the phrase can be misleading. For example, “survival” is only one aspect of selection, and not always the most important. Another problem is that the word “fit” is frequently confused with a state of physical fitness. In the evolutionary meaning “fitness” is the rate of reproductive output among a class of genetic variants.[13] The phrase can also be interpreted to express a theory or hypothesis: that "fit" as opposed to "unfit" individuals or species, in some sense of "fit", will survive some test. Interpretations of the phrase as expressing a theory are in danger of being tautological, meaning roughly "those with a propensity to survive have a propensity to survive"; to have content the theory must use a concept of fitness that is independent of that of survival.[5][14] Interpreted as a theory of species survival, the theory that the fittest species survive is undermined by evidence that while direct competition is observed between individuals, populations and species, there is little evidence that competition has been the driving force in the evolution of large groups such as, for example, amphibians, reptiles, and mammals. Instead, these groups have evolved by expanding into empty ecological niches.[15] In the punctuated equilibrium model of environmental and biological change, the factor determining survival is often not superiority over another in competition but ability to survive dramatic changes in environmental conditions, such as after a meteor impact energetic enough to greatly change the environment globally. The main land dwelling animals to survive the K-Pg impact 66 million years ago had the ability to live in underground tunnels, for example. In 2010 Sahney et al. argued that there is little evidence that intrinsic, biological factors such as competition have been the driving force in the evolution of large groups. Instead, they cited extrinsic, abiotic factors such as expansion as the driving factor on a large evolutionary scale. The rise of dominant groups such as amphibians, reptiles, mammals and birds occurred by opportunistic expansion into empty ecological niches and the extinction of groups happened due to large shifts in the abiotic environment.[15] It has been claimed that "the survival of the fittest" theory in biology was interpreted by late 19th century capitalists as "an ethical precept that sanctioned cut-throat economic competition" and led to the advent of the theory of "social Darwinism" which was used to justify laissez-faire economics, war and racism. However, these ideas predate and commonly contradict Darwin's ideas, and indeed their proponents rarely invoked Darwin in support.[citation needed] The term "social Darwinism" referring to capitalist ideologies was introduced as a term of abuse by Richard Hofstadter's Social Darwinism in American Thought published in 1944.[16][17] Critics of theories of evolution have argued that "survival of the fittest" provides a justification for behaviour that undermines moral standards by letting the strong set standards of justice to the detriment of the weak.[18] However, any use of evolutionary descriptions to set moral standards would be a naturalistic fallacy (or more specifically the is–ought problem), as prescriptive moral statements cannot be derived from purely descriptive premises. Describing how things are does not imply that things ought to be that way. It is also suggested that "survival of the fittest" implies treating the weak badly, even though in some cases of good social behaviour – co-operating with others and treating them well – might improve evolutionary fitness.[16][19] Russian anarchist Peter Kropotkin viewed the concept of "survival of the fittest" as supporting co-operation rather than competition. In his book Mutual Aid: A Factor of Evolution he set out his analysis leading to the conclusion that the fittest was not necessarily the best at competing individually, but often the community made up of those best at working together. He concluded that In the animal world we have seen that the vast majority of species live in societies, and that they find in association the best arms for the struggle for life: understood, of course, in its wide Darwinian sense — not as a struggle for the sheer means of existence, but as a struggle against all natural conditions unfavourable to the species. The animal species, in which individual struggle has been reduced to its narrowest limits, and the practice of mutual aid has attained the greatest development, are invariably the most numerous, the most prosperous, and the most open to further progress. Applying this concept to human society, Kropotkin presented mutual aid as one of the dominant factors of evolution, the other being self-assertion, and concluded that In the practice of mutual aid, which we can retrace to the earliest beginnings of evolution, we thus find the positive and undoubted origin of our ethical conceptions; and we can affirm that in the ethical progress of man, mutual support not mutual struggle – has had the leading part. In its wide extension, even at the present time, we also see the best guarantee of a still loftier evolution of our race. "Survival of the fittest" is sometimes claimed to be a tautology.[20] The reasoning is that if one takes the term "fit" to mean "endowed with phenotypic characteristics which improve chances of survival and reproduction" (which is roughly how Spencer understood it), then "survival of the fittest" can simply be rewritten as "survival of those who are better equipped for surviving". Furthermore, the expression does become a tautology if one uses the most widely accepted definition of "fitness" in modern biology, namely reproductive success itself (rather than any set of characters conducive to this reproductive success). This reasoning is sometimes used to claim that Darwin's entire theory of evolution by natural selection is fundamentally tautological, and therefore devoid of any explanatory power.[20] However, the expression "survival of the fittest" (taken on its own and out of context) gives a very incomplete account of the mechanism of natural selection. The reason is that it does not mention a key requirement for natural selection, namely the requirement of heritability. It is true that the phrase "survival of the fittest", in and by itself, is a tautology if fitness is defined by survival and reproduction. Natural selection is the portion of variation in reproductive success that is caused by heritable characters (see the article on natural selection).[20] If certain heritable characters increase or decrease the chances of survival and reproduction of their bearers, then it follows mechanically (by definition of "heritable") that those characters that improve survival and reproduction will increase in frequency over generations. This is precisely what is called "evolution by natural selection." On the other hand, if the characters which lead to differential reproductive success are not heritable, then no meaningful evolution will occur, "survival of the fittest" or not: if improvement in reproductive success is caused by traits that are not heritable, then there is no reason why these traits should increase in frequency over generations. In other words, natural selection does not simply state that "survivors survive" or "reproducers reproduce"; rather, it states that "survivors survive, reproduce and therefore propagate any heritable characters which have affected their survival and reproductive success". This statement is not tautological: it hinges on the testable hypothesis that such fitness-impacting heritable variations actually exist (a hypothesis that has been amply confirmed.)[20] Momme von Sydow suggested further definitions of 'survival of the fittest' that may yield a testable meaning in biology and also in other areas where Darwinian processes have been influential. However, much care would be needed to disentangle tautological from testable aspects. Moreover, an "implicit shifting between a testable and an untestable interpretation can be an illicit tactic to immunize natural selection [...] while conveying the impression that one is concerned with testable hypotheses."[14][21] Skeptic Society founder and Skeptic magazine publisher Michael Shermer addresses the tautology problem in his 1997 book, Why People Believe Weird Things, in which he points out that although tautologies are sometimes the beginning of science, they are never the end, and that scientific principles like natural selection are testable and falsifiable by virtue of their predictive power. Shermer points out, as an example, that population genetics accurately demonstrate when natural selection will and will not effect change on a population. Shermer hypothesizes that if hominid fossils were found in the same geological strata as trilobites, it would be evidence against natural selection.[22] ^ a b c d "Letter 5140 – Wallace, A. R. to Darwin, C. R., 2 July 1866". Darwin Correspondence Project. Retrieved 12 January 2010. "Letter 5145 – Darwin, C. R. to Wallace, A. R., 5 July (1866)". Darwin Correspondence Project. Retrieved 12 January 2010.  ^ "Herbert Spencer in his Principles of Biology of 1864, vol. 1, p. 444, wrote: 'This survival of the fittest, which I have here sought to express in mechanical terms, is that which Mr. Darwin has called "natural selection", or the preservation of favoured races in the struggle for life.'" Maurice E. Stucke, Better Competition Advocacy, retrieved 29 August 2007 , citing HERBERT SPENCER, THE PRINCIPLES OF BIOLOGY 444 (Univ. Press of the Pac. 2002.) ^ a b "This preservation, during the battle for life, of varieties which possess any advantage in structure, constitution, or instinct, I have called Natural Selection; and Mr. Herbert Spencer has well expressed the same idea by the Survival of the Fittest. The term "natural selection" is in some respects a bad one, as it seems to imply conscious choice; but this will be disregarded after a little familiarity." Darwin, Charles (1868), The Variation of Animals and Plants under Domestication, 1 (1st ed.), London: John Murray, p. 6, retrieved 10 August 2015  ^ a b Freeman, R. B. (1977), "On the Origin of Species", The Works of Charles Darwin: An Annotated Bibliographical Handlist (2nd ed.), Cannon House, Folkestone, Kent, England: Wm Dawson & Sons Ltd  ^ a b "This preservation of favourable variations, and the destruction of injurious variations, I call Natural Selection, or the Survival of the Fittest." – Darwin, Charles (1869), On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (5th ed.), London: John Murray, pp. 91–92, retrieved 22 February 2009  ^ a b c "Stephen Jay Gould, Darwin's Untimely Burial", 1976; from Philosophy of Biology:An Anthology, Alex Rosenberg, Robert Arp ed., John Wiley & Sons, May 2009, pp. 99–102. ^ "Evolutionary biologists customarily employ the metaphor 'survival of the fittest,' which has a precise meaning in the context of mathematical population genetics, as a shorthand expression when describing evolutionary processes." Chew, Matthew K.; Laubichler, Manfred D. (4 July 2003), "PERCEPTIONS OF SCIENCE: Natural Enemies — Metaphor or Misconception?", Science, 301 (5629): 52–53, doi:10.1126/science.1085274, PMID 12846231, retrieved 20 March 2008  ^ Vol. 1, p. 444 ^ U. Kutschera (14 March 2003), A Comparative Analysis of the Darwin-Wallace Papers and the Development of the Concept of Natural Selection (PDF), Institut für Biologie, Universität Kassel, Germany, archived from the original (PDF) on 14 April 2008, retrieved 20 March 2008  ^ Darwin, Charles (1869), On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (5th ed.), London: John Murray, p. 72  ^ The principle of natural selection applied to groups of individual is known as Group selection. ^ Herbert Spencer; Truxton Beale (1916), The Man Versus the State: A Collection of Essays, M. Kennerley  (snippet) ^ Federico Morganti (May 26, 2013). "Adaptation and Progress: Spencer's Criticism of Lamarck". Evolution & Cognition.  External link in |publisher= (help) ^ Colby, Chris (1996–1997), Introduction to Evolutionary Biology, TalkOrigins Archive, retrieved 22 February 2009  ^ a b von Sydow, M. (2014). ‘Survival of the Fittest’ in Darwinian Metaphysics – Tautology or Testable Theory? Archived 3 March 2016 at the Wayback Machine. (pp. 199–222) In E. Voigts, B. Schaff & M. Pietrzak-Franger (Eds.). Reflecting on Darwin. Farnham, London: Ashgate. ^ a b Sahney, S., Benton, M.J. and Ferry, P.A. (2010), "Links between global taxonomic diversity, ecological diversity and the expansion of vertebrates on land" (PDF), Biology Letters, 6 (4): 544–547, doi:10.1098/rsbl.2009.1024, PMC 2936204 , PMID 20106856. CS1 maint: Multiple names: authors list (link) ^ a b John S. Wilkins (1997), Evolution and Philosophy: Social Darwinism – Does evolution make might right?, TalkOrigins Archive, retrieved 21 November 2007  ^ Leonard, Thomas C. (2005), "Mistaking Eugenics for Social Darwinism: Why Eugenics is Missing from the History of American Economics" (PDF), History of Political Economy, 37 (supplement:): 200–233, doi:10.1215/00182702-37-Suppl_1-200  ^ Alan Keyes (7 July 2001), WorldNetDaily: Survival of the fittest?, WorldNetDaily, retrieved 19 November 2007  ^ Mark Isaak (2004), CA002: Survival of the fittest implies might makes right, TalkOrigins Archive, retrieved 19 November 2007  ^ a b c d Corey, Michael Anthony (1994), "Chapter 5. Natural Selection", Back to Darwin: the scientific case for Deistic evolution, Rowman and Littlefield, p. 147, ISBN 978-0-8191-9307-0  ^ Cf. von Sydow, M. (2012). From Darwinian Metaphysics towards Understanding the Evolution of Evolutionary Mechanisms. A Historical and Philosophical Analysis of Gene-Darwinism and Universal Darwinism. Universitätsverlag Göttingen. ^ Shermer, Michael; Why People Believe Weird Things; 1997; Pages 143–144 Off Grid Tools Survival Axe Elite With Sheath

Survival of the fittest

Jump to navigation Jump to search Astronauts participating in tropical survival training at an Air Force Base near the Panama Canal, 1963. From left to right are an unidentified trainer, Neil Armstrong, John H. Glenn, Jr., L. Gordon Cooper, and Pete Conrad. Survival training is important for astronauts, as a launch abort or misguided reentry could potentially land them in a remote wilderness area. Survival skills are techniques that a person may use in order to sustain life in any type of natural environment or built environment. These techniques are meant to provide basic necessities for human life which include water, food, and shelter. The skills also support proper knowledge and interactions with animals and plants to promote the sustaining of life over a period of time. Survival skills are often associated with the need to survive in a disaster situation.[1] Survival skills are often basic ideas and abilities that ancients invented and used themselves for thousands of years.[2] Outdoor activities such as hiking, backpacking, horseback riding, fishing, and hunting all require basic wilderness survival skills, especially in handling emergency situations. Bush-craft and primitive living are most often self-implemented, but require many of the same skills. Main article: Wilderness medical emergency A first aid kit containing equipment to treat common injuries and illness First aid (wilderness first aid in particular) can help a person survive and function with injuries and illnesses that would otherwise kill or incapacitate him/her. Common and dangerous injuries include: The survivor may need to apply the contents of a first aid kit or, if possessing the required knowledge, naturally occurring medicinal plants, immobilize injured limbs, or even transport incapacitated comrades. Main article: Bivouac shelter Shelter built from tarp and sticks. Pictured are displaced persons from the Sri Lankan Civil War A shelter can range from a natural shelter, such as a cave, overhanging rock outcrop, or fallen-down tree, to an intermediate form of man-made shelter such as a debris hut, tree pit shelter, or snow cave, to completely man-made structures such as a tarp, tent, or longhouse. Making fire is recognized in the sources as significantly increasing the ability to survive physically and mentally. Lighting a fire without a lighter or matches, e.g. by using natural flint and steel with tinder, is a frequent subject of both books on survival and in survival courses. There is an emphasis placed on practicing fire-making skills before venturing into the wilderness. Producing fire under adverse conditions has been made much easier by the introduction of tools such as the solar spark lighter and the fire piston. To start a fire you’ll need some sort of heat source hot enough to start a fire, kindling, and wood. Starting a fire is really all about growing a flame without putting it out in the process. One fire starting technique involves using a black powder firearm if one is available. Proper gun safety should be used with this technique to avoid injury or death. The technique includes ramming cotton cloth or wadding down the barrel of the firearm until the cloth is against the powder charge. Next, fire the gun up in a safe direction, run and pick up the cloth that is projected out of the barrel, and then blow it into flame. It works better if you have a supply of tinder at hand so that the cloth can be placed against it to start the fire.[3] Fire is presented as a tool meeting many survival needs. The heat provided by a fire warms the body, dries wet clothes, disinfects water, and cooks food. Not to be overlooked is the psychological boost and the sense of safety and protection it gives. In the wild, fire can provide a sensation of home, a focal point, in addition to being an essential energy source. Fire may deter wild animals from interfering with a survivor, however wild animals may be attracted to the light and heat of a fire. Hydration pack manufactured by Camelbak A human being can survive an average of three to five days without the intake of water. The issues presented by the need for water dictate that unnecessary water loss by perspiration be avoided in survival situations. The need for water increases with exercise.[4] A typical person will lose minimally two to maximally four liters of water per day under ordinary conditions, and more in hot, dry, or cold weather. Four to six liters of water or other liquids are generally required each day in the wilderness to avoid dehydration and to keep the body functioning properly.[5] The U.S. Army survival manual does not recommend drinking water only when thirsty, as this leads to underhydrating. Instead, water should be drunk at regular intervals.[6][7] Other groups recommend rationing water through "water discipline".[8] A lack of water causes dehydration, which may result in lethargy, headaches, dizziness, confusion, and eventually death. Even mild dehydration reduces endurance and impairs concentration, which is dangerous in a survival situation where clear thinking is essential. Dark yellow or brown urine is a diagnostic indicator of dehydration. To avoid dehydration, a high priority is typically assigned to locating a supply of drinking water and making provision to render that water as safe as possible. Recent thinking is that boiling or commercial filters are significantly safer than use of chemicals, with the exception of chlorine dioxide.[9][10][11] Culinary root tubers, fruit, edible mushrooms, edible nuts, edible beans, edible cereals or edible leaves, edible moss, edible cacti and algae can be gathered and if needed, prepared (mostly by boiling). With the exception of leaves, these foods are relatively high in calories, providing some energy to the body. Plants are some of the easiest food sources to find in the jungle, forest or desert because they are stationary and can thus be had without exerting much effort.[12] Skills and equipment (such as bows, snares and nets) are necessary to gather animal food in the wild include animal trapping, hunting, and fishing. Food, when cooked in canned packaging (e.g. baked beans) may leach chemicals from their linings [13]. Focusing on survival until rescued by presumed searchers, the Boy Scouts of America especially discourages foraging for wild foods on the grounds that the knowledge and skills needed are unlikely to be possessed by those finding themselves in a wilderness survival situation, making the risks (including use of energy) outweigh the benefits.[14] Cockroaches[15], flies [16]and ants[17] can contaminate food, making it unsafe for consumption. Celestial navigation: using the Southern Cross to navigate South without a compass Those going for trips and hikes are advised[18] by Search and Rescue Services to notify a trusted contact of their planned return time, then notify them of your return. They can tell them to contact the police for search and rescue if you have not returned by a specific time frame (e.g. 12 hours of your scheduled return time). Survival situations can often be resolved by finding a way to safety, or a more suitable location to wait for rescue. Types of navigation include: The mind and its processes are critical to survival. The will to live in a life-and-death situation often separates those that live and those that do not. Stories of heroic feats of survival by regular people with little or no training but a strong will to live are not uncommon. Among them is Juliane Koepcke, who was the sole survivor among the 93 passengers when her plane crashed in the jungle of Peru. Situations can be stressful to the level that even trained experts may be mentally affected. One should be mentally and physically tough during a disaster. To the extent that stress results from testing human limits, the benefits of learning to function under stress and determining those limits may outweigh the downside of stress.[19] There are certain strategies and mental tools that can help people cope better in a survival situation, including focusing on manageable tasks, having a Plan B available and recognizing denial.[20] In a building collapse, it is advised that you[21]: Civilian pilots attending a Survival course at RAF Kinloss learn how to construct shelter from the elements, using materials available in the woodland on the north-east edge of the aerodrome. Main article: Survival kit Often survival practitioners will carry with them a "survival kit". This consists of various items that seem necessary or useful for potential survival situations, depending on anticipated challenges and location. Supplies in a survival kit vary greatly by anticipated needs. For wilderness survival, they often contain items like a knife, water container, fire starting apparatus, first aid equipment, food obtaining devices (snare wire, fish hooks, firearms, or other,) a light, navigational aids, and signalling or communications devices. Often these items will have multiple possible uses as space and weight are often at a premium. Survival kits may be purchased from various retailers or individual components may be bought and assembled into a kit. Some survival books promote the "Universal Edibility Test".[22] Allegedly, it is possible to distinguish edible foods from toxic ones by a series of progressive exposures to skin and mouth prior to ingestion, with waiting periods and checks for symptoms. However, many experts including Ray Mears and John Kallas[23] reject this method, stating that even a small amount of some "potential foods" can cause physical discomfort, illness, or death. Many mainstream survival experts have recommended the act of drinking urine in times of dehydration and malnutrition.[citation needed] However, the United States Air Force Survival Manual (AF 64-4) instructs that this technique is a myth and should never be applied.[citation needed] Several reasons for not drinking urine include the high salt content of urine, potential contaminants, and sometimes bacteria growth, despite urine's being generally "sterile". Many classic cowboy movies, classic survival books and even some school textbooks suggest that sucking the venom out of a snake bite by mouth is an appropriate treatment and/or also for the bitten person to drink their urine after the poisonous animal bite or poisonous insect bite as a mean for the body to provide natural anti-venom. However, venom can not be sucked out and it may be dangerous for a rescuer to attempt to do so. Modern snakebite treatment involves pressure bandages and prompt medical treatment.[24] Media

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