Saturday, August 18, 2012

Experimental Reason and Sense Experience

Kant's characterization, in the footnote to B xxii of the 1st Critique, of the Copernican revolution as "contradictory to the senses", is misleading, at best.  The senses provide only appearances of the Sun at different locations of the sky, and that it is in motion is one theory of those changes, while that the spectator is in motion, is another such theory, i. e. the latter theory does not challenge the visual evidence itself.  Thus, Copernicus' rejection of Geocentrism no more entails a repudiation of Sense Experience than does Galileo's rolling a ball down an incline in order to determine if it accelerates.  More generally, the passage is at odds with one of the main themes of its context--that Experimental Reason involves the controlled modification of Sense Experience.

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