It happens to me quite a bit. I come back to some code I wrote a couple of years ago. At the time the logic was "obvious". Now, I need to puzzle it out all ove

It happens to me quite a bit. I come back to some code I wrote a couple of years ago. At the time the logic was "obvious". Now, I need to puzzle it out all over again. So I retrofit a suitable comment so that next time I won't be doing the same blank stare. For me, most of what passes for programming is "refactoring" and fixing edge-cases.