Programmers often discover solutions while explaining a problem to someone else, even to people with no programming knowledge. Describing the code, and comparing to what it actually does, exposes inconsistencies. Explaining a subject also forces the programmer to look at it from new perspectives and can provide a deeper understanding.

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[–] 6 points 7 months ago (2 children)

A corollary to this is that it's often very difficult to explain what's wrong because if you could explain it clearly, you would probably be fixing it already.

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