With respect to intuitions , if it "must conform to the constitution of the objects, I do not see how we could know anything of the latter a priori ; but if the object (as object of the senses) must conform to the constitution of our faculty of intuition, I have no difficulty in conceiving such a possibility" (Bxvii). The same idea applies to the use of concepts. The understanding supplies rules to which objects of experience must conform. Kant called this switch Copernican because of the change in perspective it involves (though unlike Copernicus' hypothesis, Kant's puts the human subject in the "center" of things). Kant made another analogy, this time with the ancient mathematicians who converted geometry from an empirical science (useful in surveying after the annual flooding of the Nile) to an a priori science. They did so by recognizing that the objects of geometry are constructed . In Euclid's Elements , the proofs proceed by the construction of various figures (straight lines and circles) and reasoning about the
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This note was uploaded on 11/09/2011 for the course PSY PSY2012 taught by Professor Scheff during the Fall '09 term at Broward College.