Now, ask yourself why these defects happen too often. ... It is programmers who create defects – not languages.
And what is it that programmers are supposed to do to prevent defects? ... TEST!
Unfortunately, altering people's behavior by telling/commanding/suggesting that they do so, whether or not supported by perfect reasoning, rarely if ever succeeds.
It's overwhelmingly the case that people, including programmers, do what they do in reaction to the allowances and bounds of a system and so it is far more effective to alter the system than attempt to alter the people.
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Unfortunately, altering people's behavior by telling/commanding/suggesting that they do so, whether or not supported by perfect reasoning, rarely if ever succeeds.
It's overwhelmingly the case that people, including programmers, do what they do in reaction to the allowances and bounds of a system and so it is far more effective to alter the system than attempt to alter the people.