Dynamic backward reasoning systems
Pragmatics and natural language generation
Shape from fractal geometry
A rational reconstruction of nonmonotonic truth maintenance systems
Terminological reasoning is inherently intractable
Connections and symbols: Steven Pinker and Jacques Mehler, eds. (The MIT Press, Cambridge, MA, 1988); 255 pages, $17.50. Reprinted from Cognition: International Journal of Cognitive Science 28 (1988)
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