Behavioral and Brain Sciences



Short Communication

Does perception replicate the external world?


Donald D. Hoffman a1
a1 Department of Cognitive Science, University of California at Irvine, Irvine, CA 92697 ddhoff@uci.edu http://aris.ss.uci.edu/cogsci/personnel/hoffman/hoffman.html

Abstract

Vision scientists standardly assume that the goal of vision is to recover properties of the external world. Lehar's “miniature, virtual-reality replica of the external world inside our head” (target article, sect. 10) is an example of this assumption. I propose instead, on evolutionary grounds, that the goal of vision is simply to provide a useful user interface to the external world.



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