Abstract
Our perceptual systems are products of evolution and have been shaped, in part, by
natural selection. It is widely assumed that natural selection favors veridical
perceptions—that is, perceptions that accurately describe aspects of the objective world
relevant to fitness. This assumption has been tested using the mathematics of evolutionary
game theory. It is false. Monte Carlo simulations reveal that veridical perceptions are
never more fit, and generically are less fit, than nonveridical perceptions of equal
complexity that are tuned to fitness. Veridical perceptions go extinct, and their
extinction rate increases as complexity increases. These results motivate a new theory of
perceptual systems—as species-specific interfaces shaped by natural selection to hide
objective reality and guide adaptive behavior. For
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