Trail and Error different from essential discrimination
Humans can intuitively grasp what's essential or inessential about a problem and zero in on it. Symbol systems lack the capacity for "essential discrimination" and proceed blindly by brute-force trail and error.
Hubert Dreyfus, 1972.

Note: Dreyfus derives his notion of essential discrimination from the work of Gestalt psychologist Max Wertheimer.
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Artificial Intelligence »Artificial Intelligence
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Can computers think? [1] »Can computers think? [1]
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Yes: physical symbol systems can think [3] »Yes: physical symbol systems can think [3]
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The Heuristic Search Assumption »The Heuristic Search Assumption
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Trail and Error different from essential discrimination
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Best heuristics aren't just trial and error »Best heuristics aren't just trial and error
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Hubert Dreyfus »Hubert Dreyfus
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