Human beings are a species that are constantly driven by the desire to seek meaning. This fundamental concern underlies the process of human visual perception. Faced even by "meaningless" patterns the mind restlessly tries to make them meaningful. There are two basic things in perception; "data" and "knowledge". The famous philosopher James J Gibson advocated a theory that visual data passes from the retina to the brain where it is structured into perception of a meaningful whole. Some others like Richard L Gregory adopt a constructivist

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stand that the knowledge decides what we see, and what is understood as seen. Data driven perception is mindless objectivity whereas theory driven perception is daydreaming.



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