Source: Systems Engineering Tools, (1965), Systems Engineering Methods (1967), p. 70
“The critical act in formulating computational theories turns out to be the discovery of valid constraints on the way the world is structured -- constraints that provide sufficient information to allow the processing to succeed.”
Representation and recognition of the spatial organization of three-dimensional shapes, 1978
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David Marr 9
British neuroscientist and psychologist 1945–1980Related quotes

constitutions, laws, property rights
Source: Institutions (1990), p. 97; As cited in: Oliver E. Williamson (1996) The Mechanisms of Governance. p. 4
As cited in Donald Knuth (1972). "George Forsythe and the Development of Computer Science" http://www.stanford.edu/dept/ICME/docs/history/forsythe_knuth.pdf. Comms. ACM.
"Educational implications of the computer revolution," 1963
Source: Information Science in Theory and Practice (1987), p. 14.

“As long as you can Houdini your way out of the Sisyphean constraints then originality happens.”
Interview "David Mitchell at Writers and Readers week, New Zealand" at ABC.net (30 March 2008) http://www.abc.net.au/rn/bookshow/stories/2008/2201562.htm

Douglass North. (1991). "Institutions." Journal of Economic Perspectives, 5(1): 97-112; Abstract
Another part of the interview: Also cited at: Mark Wunsch. "[http://markwunsch.com/blog/2008/09/27/design-q-a-with-charles-eames.html A software engineer and technologist: Design Q&A with Charles Eames". at markwunsch.com/blog, 2008/09/27
Design Q & A with Charles Eames, 1972
Joseph Sarkis, Adrien Presley and Donald H. Liles (1995) "The management of technology within an enterprise engineering framework." in: Computers & industrial engineering.