Quote #680 The Only Way For Errors To Occur In A Program Is By Being Put There By The Author.

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Quote #680

The only way for errors to occur in a program is by being put there by the
author. No other mechanisms are known. Programs can't acquire bugs by
sitting around with other buggy programs. Right practice aims at preventing
insertion of errors and, failing that, removing them before testing or any
other running of the program.

-- H. Mills

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