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A hacker koan, circa 1970s. Author unknown.
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knight-and-the-lisp-machine.md

Tom Knight and the Lisp Machine

A novice was trying to fix a broken Lisp machine by turning the power off and on.

Knight, seeing what the student was doing, spoke sternly: “You cannot fix a machine
by just power-cycling it with no understanding of what is going wrong.”

Knight turned the machine off and on.

The machine worked.

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