this post was submitted on 26 Nov 2023
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Exactly that! Everyone can See "what" is happening, the code is right there. But the code usually doesn't tell you "why" that is happening - good comments help understand the authors intent and give context, so you don't have to guess.
Good comments should explain the things that are not obvious.
Good comments more than once prevented me from accidentially undoing a fix.
Yup my comments are generally along the lines of:
This is a side effect of doing lots of tiny websites , microcontroller code and mini web apps for under budgeted marketing projects with constantly changing designs and requirements that don’t need to last too long.