„Cybernetics is the science or the art of manipulating defensible metaphors; showing how they may be constructed and what can be inferred as a result of their existence.“
— Gordon Pask British psychologist 1928 - 1996
Pask (1966) The Cybernetics of Human Performance and Learning. Cited in: George J. Klír (2001) Facets of Systems Science. p. 429.