|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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