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by Moru 791 days ago
We had a good math teacher. There was a formula he just told us to memorize, the class asked how it worked but he just said we don't need to know why or how, just like we don't know how a calculator works. What he didn't know was that the class last week in electronics was about how calculators work.

He had to confess he didn't know why or how either of them works, he just uses them :-)