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>it ruins the surprise

Huh? In the first place, I do NOT want any surprise at all.

Until you go back to it in a year's time and can't remember any of the reasons for your design decisions.

Besides, I genuinely find myself hilarious so the attempts at pithy commentary tend to make the whole "christ what was I thinking" part of looking at my old work less painful.

A novel is nothing but comments. The code was already executed in the author's brain.