trial and error
Pronunciation: trii'al er'or
Definition: The apparently random, haphazard, hit-or-miss exploratory activity that often precedes the acquisition of new information or adjustments; it may be overt, as in a rat running in a maze, or covert (vicarious), as when one thinks of various ways of coping with a situation.
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Examples: glitazone, GI cocktail, etc.