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In order to understand bird flight, we have to understand aerodynamics; only then does the structure of feathers and the different shapes of bird's wings make sense.

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More quotes by David Marr

Vision is the process of discovering from images what is present in the world, and where it is.

The primitives of a representation are the most elementary units of shape information available in a representation.

The abstract properties of this mapping are defined precisely, and its appropriateness and adequacy for the task at hand are demonstrated.

Vision is a process that produces from images of the external world a description that is useful to the viewer and not cluttered with irrelevant information.

Steven Yantis (2001)

To understand the relationship between behavior and brain one has to begin by defining the function, or computational goal, of a complete behavior. Only then can a neuroscientist determine how the brain achieves that goal.

Paul W. Glimcher (2004)

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Quote text and notes from Wikiquote: David Marr (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.