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TY - INPR N1 - Presented at: Zenon Pylyshyn Festschrift, Guelph, 29 April 2005 http://zencon.ca/ ID - cogprints4788 UR - http://cogprints.org/4788/ A1 - Harnad, Stevan TI - Cohabitation: Computation at 70, Cognition at 20 Y1 - 2006/// N2 - Zenon Pylyshyn cast cognition's lot with computation, stretching the Church/Turing Thesis to its limit: We had no idea how the mind did anything, whereas we knew computation could do just about everything. Doing it with images would be like doing it with mirrors, and little men in mirrors. So why not do it all with symbols and rules instead? Everything worthy of the name "cognition," anyway; not what was too thick for cognition to penetrate. It might even solve the mind/body problem if the soul, like software, were independent of its physical incarnation. It looked like we had the architecture of cognition virtually licked. Even neural nets could be either simulated or subsumed. But then came Searle, with his sino-spoiler thought experiment, showing that cognition cannot be all computation (though not, as Searle thought, that it cannot be computation at all). So if cognition has to be hybrid sensorimotor/symbolic, it turns out we've all just been haggling over the price, instead of delivering the goods, as Turing had originally proposed 5 decades earlier. AV - public KW - pylyshyn KW - mental imagery KW - computation KW - cognition KW - cognitive penetrability KW - language of thought KW - propositions KW - symbol grounding KW - turing test KW - neural nets KW - dynamical systems KW - mental rotation ER -