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Issue No. 02 - March/April (2004 vol. 19)
ISSN: 1541-1672
pp: 78-80
Robert R. Hoffman , Institute for Human and Machine Cognition
Gavan Lintern , General Dynamics
Susan Eitelman , CHI Systems
<p>The Roman mythological god Janus was said to bring all things into the world, from the seasons to the ways of civilization. He was symbolized as a two-faced god, one youthful, the other elderly. The authors find here an allegory to the apprentice-expert continuum in knowledge acquisition, so they've named a principle of human-centered computing after Janus. This principle deals with the distinction between performance and training, and its implications for intelligent technologies.</p>

S. Eitelman, R. R. Hoffman and G. Lintern, "The Janus Principle," in IEEE Intelligent Systems, vol. 19, no. , pp. 78-80, 2004.
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