On 8/29/2015 12:12 PM, Percival P. Cassidy wrote:
Some twenty years ago in Taiwan we used to go to a supermarket that had
fancy electronic cash registers, on top of which were sitting abacuses
(abaci?). If anyone disputed the total, they checked it with the abacus.

Perce


A couple decades ago, I read a wise saying. Some thing
about kids do figures by hand and check with a calculator.
Adults do things with a calculator, and check by hand.

Same concept.



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Christopher A. Young
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