8 - Philosophy 1 The General Form of the Skeptics Argument...

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Philosophy 1 05/03/2008 18:56:00 The General Form of the Skeptic’s Argument P1. If I know that P, then I know that Not-SK. P2. I don’t know that Not-SK. C. So, I don’t know that P. o Where ‘SK’ is some  skeptical scenario  (like Class A dreaming, or being  deceived by the Evil Genius) and ‘P’ is some  belief  the justification for  which is threatened by SK. The Aftermath of the 3 rd  Wave If  the Evil Genius argument is sound, are any of my beliefs still justified? Descartes: If so, then these will be among my  foundational  (or basic)  beliefs . Do I Know That I Exist? Descartes:  even if  I am being deceived by the Evil Genius into thinking all  sorts of things that are not true, the Evil Genius cannot deceive me into  thinking that I exist. I cannot rationally doubt my own existence. Why? Because doubting is a way  of thinking, and thinking requires existence. The Cogito Judgement Question : so, is Descartes making the following inference? o I doubt, therefore I think, therefore I am. (Dubito, ergo cogito, ergo  sum) o He doesn’t explicitly say:  Cogito, ergo sum . o What he actually says is:  Cogito, sum . o He refers to “I think, I am” as a  statement , one that is true on any  occasion on which he considers it. Descartes on Mind and Body Descartes asks: What am I  essentially ? (What are my essential properties?)
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o Essential Property : property F is an essential property of X if and only  if: It is necessary that if X exists, then X has F.
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This note was uploaded on 04/07/2008 for the course PHIL 1 taught by Professor Lewis during the Winter '08 term at UCSB.

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8 - Philosophy 1 The General Form of the Skeptics Argument...

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