PHLA10H3 Lecture Notes - Lecture 13: Virtual Reality, A Priori And A Posteriori, Foundationalism
Document Summary
13 appears twice as sums; apartment # is 13. 2, 2, 9 because there"s an oldest child. To build a great tower needs very firm foundations. Similarly, knowledge depends on a foundation of propositions known with absolute certainty. One model for this is axiomatic geometry, first codified by euclid. Two features: the axioms are self-evident" cannot be false are absolutely certain, the theorems follow from axioms follow by pure logic inherit certainty. There are consistent geometrical systems that deny it. There are either no parallel lines, or many. Used to discover the foundations of knowledge. For any proposition, consider if there is any way to put it in some doubt: ex. Harper is pm : doubt: he may have died in this second. The method is applied to classes of beliefs (beliefs based on perception, or memory, etc. ) An indubitable proposition is one that passes descartes" test: it cannot be doubted ex.
