A perfect program needs no comments at all.
I disagree on this. Readability should be one of the main target of a perfect program, and comments are an important part of it.
I think the point is that a "perfect program" is so inherently clear that comments are unnecessary. Of course, there's no such thing, but the point is that, in the opinion of some, comments are often (ab)used as a substitute for clear programming.
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