• dream
• any
• it is possible I don't have any body
• I have a clear and distinct idea that I am a thinking thing
• I have a clear and distinct idea of body
• body is extension 
• These can be apart I have a clear and distinct idea of this
•  saul kripke- smartest person in American philosophy
• Lebniz Law a=b - everything of a is true for b
• a = b imples if b of a ( of a - b)
• box p it is necessary that p
• box p it is possible that p
• if a = b it follows that if box a  = a - box a = b
• the second thing
• box a = a - ( a=b - box a = b)
• if p is the case then q is the case then r is the case is equvelant to if p and q is the case then r is the case
• if Christina is a California resident then if Christina has a drivers license then Christina has a California drivers license
• this is equivalent to if Christina is a resident in California and has a drivers license then she has a California drivers license
• every rule of logic says a=a
• a= b necessarily if a=b
• not a = b the a doesn't = b
• if Christina is in los angeles she is in California
• if chirstina is not in  California then she is not in Los Angeles
• water might be h3O
• dream argument is a thought experiment
•  decartes is a mechanist
• all physical things are just extensions with geometrical space
• newton overthrew mechanism
• the basic picture for the mind is an un extended substance
• the point where the mind and body connect is the brain
• the core to dualism is that the physical world consist of matter
• how does an extend thing cause an extend thing to move
• Decartes think all of your memories are contained in your brain and your soul observes the information in your brain