PHIL102 Study Guide - Quiz Guide: Direct And Indirect Realism, Dream Argument

• School: University of Delaware
• Department: Philosophy
• Course: PHIL102
• Professor: Professor Shabo

Document Summary

You can believe something true and it may not be justified. Justification and truth are necessary for knowledge. (1) descartes dream hypothesis- for all decarte knows he could be dreaming even if he is awake. You never know if you are truly awake. Dream argument, unless there is a sure fire way to separate dreaming from waking you cannot rule out the dream hypothesis. There is no sure fire way to distinguish dreaming from waking. You cannot be certain about the external world. The demon hypothesis states that for all descatres he could have been created by a demon who always leads him into wrong judgement even when he is sure that he is right. If he cannot rule out this hypothesis, he can not be sure about anything at all. There is no way to rule out the demon hypothesis. He cannot be certain about anything at all. Cartesian uses this to call into question all of our beliefs.