An Old Puzzle Asks How A Barometer Can Be Used To Measure The Height Of A Building.

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An old puzzle asks how a barometer can be used to measure the height of a
building. Answers range from dropping the instrument from the top and
measuring the time of its fall to giving it to the building's
superintendent in return for a look at the plans. A modern version of the
puzzle asks how a personal computer can balance a checkbook. An elegant
solution is to sell the machine and deposit the money.
-- Jon Bentley

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