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An engineer, a physicist, and a mathematician are trying to set up a
fenced-in area for some sheep, but they have a limited amount of building
material. The engineer gets up first and makes a square fence with the
material, reasoning that it's a pretty good working solution. No no ,
says the physicist, there's a better way . He takes the fence and
makes a circular pen, showing how it encompasses the maximum possible space
with the given material.
Then the mathematician speaks up: "No, no, there's an even better way." To the others' amusement he proceeds to construct a little tiny fence around himself, then declares:
I define myself to be on the outside.
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