“The intellectually aggressive hedgehogs knew one big thing and sought, under the banner of parsimony, to expand the explanatory power of that big thing to “cover” new cases; the more eclectic foxes knew many little things and were content to improvise ad hoc solutions to keep pace with a rapidly changing world.”

— Philip E. Tetlock

About prediction and forecasting. Fox commented that "psychologist Philip Tetlock (following the lead of Isaiah Berlin), divided the world of political forecasters into hedgehogs and foxes."
Source: Justin Fox. " How to Be Bad at Forecasting https://hbr.org/2012/05/how-to-be-bad-at-forecasting.html," in Harvard Business Review, May 11, 2012.

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Philip E. Tetlock 5

American political science writer 1954

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As quoted in The Hedgehog and the Fox (1953) by Isaiah Berlin
Variant translations:
The fox knows many things; the hedgehog one great thing.
The fox knows many tricks; the hedgehog one good one.
The fox knows many tricks; and the hedgehog only one; but that is the best one of all.
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