How can we know if we are a brain in a vat? Can we be sure that we are not the playthings of evil demons? These questions have been discussed by many philosophers in the past and still we do not have a proof that we are not some demon’s plaything. Yet, at least two prominent philosophers, Renι Descartes and John Locke believed there are ways to prove that we are not brains in vats. At one point in his philosophy, Descartes reflected that perhaps God or some evil spirit was constantly tricking his mind, causing him to believe what was false. Descartes then responded to this argument by beginning with the observation that even if he were dreaming, or constantly deceived, he could at least be certain that he had thoughts, and therefore existed as a thinking being. If an individual has an idea, then that individual would understand it and assent to i....

Number Of Pages: 4

Number Of Words: 877

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