Dream Argument & Arch Deceiver Argument(part of Descartes skeptical method)
Senses are unreliable
-doubt everything & see what's left=foundation of knowledge(what can't be doubted)
"I exist" Doubting-Doubter, deception-deceived,thinking-thinker
cagito ergo sun(I think therefore I am, I existed at least as a conscious entity)
Hume's criticism of Descarte
-there is no "I" or self
-the "self" is just a bundle of perceptions
-no thinking thing or substance
association of ideas=inventions
the mind is a theater where perceptions perform
Is the bundle metaphor compatible with the theater metaphor?
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Descarte
1)I exist 2) prove that something else exists(god) 3)God is good 4)God is not a deceiver 5)knowledge is possible, an external; world exists
-how did I conclude I exist? a priori deduction - the sentence [I exist] is clear and distinct (self evident/incorrigable)(can't be proven false)
-God is a perfect being
-A perfect being must contain all perfections
-existence is a perfection
God exists
"try your best and you will get knowledge"
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Hume(empiricist)-knowledge comes w/ senses
-any belief must be able to be tested
-need to ask of every idea "from what sense impression is the supposed idea derived?"
PERCEPTIONS
-impressions(sense)lively and vivacious
-ideas(faint copies of impressions)
cause and effect
a)priority in time(cause proceeds the effect)
b)contiguity(objects touch)
c)necessary connection
If (a)happens (b)must happen