I came across an old email from a coworker wherein he described his preference for commenting code. To paraphrase: "Comments should explain why you did something, not how you did it. If they want to know how you did it, they'll just look at your code."
That sums it up nicely. If you're one of the many, many, many, many, many, many developers who thinks commenting code is pointless, consider that nugget next time and see if it helps.
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