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The Janus Principle
March/April 2004 (vol. 19 no. 2)
pp. 78-80
Robert R. Hoffman, Institute for Human and Machine Cognition
Gavan Lintern, General Dynamics
Susan Eitelman, CHI Systems

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.

Citation:
Robert R. Hoffman, Gavan Lintern, Susan Eitelman, "The Janus Principle," IEEE Intelligent Systems, vol. 19, no. 2, pp. 78-80, March-April 2004, doi:10.1109/MIS.2004.1274915
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