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- Brain_in_a_vat abstract "In philosophy, the brain in a vat is an element used in a variety of thought experiments intended to draw out certain features of our ideas of knowledge, reality, truth, mind, and meaning. It is based on an idea, common to many science fiction stories, that a mad scientist, machine, or other entity might remove a person's brain from the body, suspend it in a vat of life-sustaining liquid, and connect its neurons by wires to a supercomputer which would provide it with electrical impulses identical to those the brain normally receives. According to such stories, the computer would then be simulating reality (including appropriate responses to the brain's own output) and the person with the "disembodied" brain would continue to have perfectly normal conscious experiences without these being related to objects or events in the real world.The simplest use of brain-in-a-vat scenarios is as an argument for philosophical skepticism and solipsism. A simple version of this runs as follows: Since the brain in a vat gives and receives exactly the same impulses as it would if it were in a skull, and since these are its only way of interacting with its environment, then it is not possible to tell, from the perspective of that brain, whether it is in a skull or a vat. Yet in the first case most of the person's beliefs may be true (if they believe, say, that they are walking down the street, or eating ice-cream); in the latter case their beliefs are false. Since the argument says one cannot know whether one is a brain in a vat, then one cannot know whether most of one's beliefs might be completely false. Since, in principle, it is impossible to rule out oneself being a brain in a vat, there cannot be good grounds for believing any of the things one believes; a skeptical argument would contend that one certainly cannot know them, raising issues with the definition of knowledge.However, if one accepts a utilitarian or some logical positivist ethical philosophy, then one should behave as though the external world is real. If one believes the external world is not real, it follows that other humans and beings do not exist, and therefore cannot be helped or harmed by one's actions. Thus, if one behaves as though the world is real and it is not, one has not seriously harmed one's own happiness (particularly because cause and effect may or may not operate the way one believes) or at least has only made one's own existence miserable. However, if one behaves as though the world is not real and it is, one's selfish decisions can cause serious harm to the happiness of large numbers of people. Therefore, for the cost-benefit analysis of belief in the existence of the external world to support disbelief, one must estimate the probability that the world does not exist as very high. Though the world does not appear wholly logical or consistent, enough of it is logical and consistent to suggest that there is a substantial probability that I am (or the reader, assuming he exists, is) part of a real universe. So, the cost-benefit analysis favors belief in the external world's existence.The brain in a vat is a contemporary version of the argument given in Hindu Maya illusion, Plato's Allegory of the Cave, Zhuangzi's "Zhuangzi dreamed he was a butterfly", and the evil demon in René Descartes' Meditations on First Philosophy.".
- Brain_in_a_vat thumbnail Braininvat.jpg?width=300.
- Brain_in_a_vat wikiPageExternalLink books?id=h3g3GicFWGoC&hl=en&printsec=frontcover.
- Brain_in_a_vat wikiPageExternalLink 978-3-540-78317-6_3.
- Brain_in_a_vat wikiPageExternalLink NeuroFlght2.pdf.
- Brain_in_a_vat wikiPageExternalLink putnam.html.
- Brain_in_a_vat wikiPageExternalLink harper's.htm.
- Brain_in_a_vat wikiPageExternalLink WhereAmI.html.
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- Brain_in_a_vat hasPhotoCollection Brain_in_a_vat.
- Brain_in_a_vat subject Category:Concepts_in_epistemology.
- Brain_in_a_vat subject Category:Hypothetical_technology.
- Brain_in_a_vat subject Category:Internalism_and_externalism.
- Brain_in_a_vat subject Category:Philosophical_arguments.
- Brain_in_a_vat subject Category:Reality.
- Brain_in_a_vat subject Category:Science_fiction_themes.
- Brain_in_a_vat subject Category:Thought_experiments_in_philosophy_of_mind.
- Brain_in_a_vat type Abstraction100002137.
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- Brain_in_a_vat type Cognition100023271.
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- Brain_in_a_vat type Event100029378.
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- Brain_in_a_vat type PhilosophicalArguments.
- Brain_in_a_vat type PsychologicalFeature100023100.
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- Brain_in_a_vat type ScienceFictionThemes.
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- Brain_in_a_vat comment "In philosophy, the brain in a vat is an element used in a variety of thought experiments intended to draw out certain features of our ideas of knowledge, reality, truth, mind, and meaning.".
- Brain_in_a_vat label "Brain in a vat".
- Brain_in_a_vat label "Cerebro en una cubeta".
- Brain_in_a_vat label "Cerveau dans une cuve".
- Brain_in_a_vat label "Cérebro numa cuba".
- Brain_in_a_vat label "Gehirn im Tank".
- Brain_in_a_vat label "Hersenen in een vat".
- Brain_in_a_vat label "Mózg w naczyniu".
- Brain_in_a_vat label "Мозг в колбе".
- Brain_in_a_vat label "دماغ في وعاء".
- Brain_in_a_vat label "水槽の脳".
- Brain_in_a_vat label "缸中之脑".
- Brain_in_a_vat sameAs Gehirn_im_Tank.
- Brain_in_a_vat sameAs Cerebro_en_una_cubeta.
- Brain_in_a_vat sameAs Cerveau_dans_une_cuve.
- Brain_in_a_vat sameAs 水槽の脳.
- Brain_in_a_vat sameAs 통_속의_뇌.
- Brain_in_a_vat sameAs Hersenen_in_een_vat.
- Brain_in_a_vat sameAs Mózg_w_naczyniu.
- Brain_in_a_vat sameAs Cérebro_numa_cuba.
- Brain_in_a_vat sameAs m.01ndcq.
- Brain_in_a_vat sameAs Q852947.
- Brain_in_a_vat sameAs Q852947.
- Brain_in_a_vat sameAs Brain_in_a_vat.
- Brain_in_a_vat wasDerivedFrom Brain_in_a_vat?oldid=598049138.
- Brain_in_a_vat depiction Braininvat.jpg.
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