The old saying is: give a boy a hammer and he'll see everything as a nail, as something to hit with the hammer. It's true enough--we get set in our ways so we use the same approaches to every problem. And when we have a tool there are opportunities.
But I realized today you can change the saying, almost reverse it. Suppose the boy has a nail to pound and no hammer? Then everything he sees becomes a potential hammer. It's "necessity is the mother of invention" time.
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