_Metamagical Themas_, p. 582, "Analogies and Roles in Human and Machine
Thinking". Considers questions of the form, "If abc goes to abd, then what does pqrs go to? What does bcd go to? What does xyz go to?"
-- email@example.com Eliezer S. Yudkowsky http://pobox.com/~sentience/tmol-faq/meaningoflife.html Running on BeOS Typing in Dvorak Programming with Patterns Voting for Libertarians Heading for Singularity There Is A Better Way