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Rene Descartes's Perceptual Knowledge

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By considering this ideas Descartes introduces doubts into his perceptual knowledge and uses this method to scrutinize a statement or a belief he holds true. The argument made by Descartes about dreaming introduces the claim that the experiences of dreaming and waking life are the same since while one is dreaming one can be deceived into believing they are having real life experiences. In a similar manner, the argument of the evil demon that has created a whole illusion of the external world and that nothing is real and is only an illusion. It helps to create a systemic doubt of all the beliefs one holds true. Both arguments have a similar structure in which: 1.Nothing can prove that I’m not being tricked into believing I am having an experience
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