[clumpthump]

I disagree with that. Sure, wrong documentation can mislead and confuse, but it can also be very helpful.

Lying comments have often helped me because it's often useful to know that a particular person at a particular point in time believed something to be true, even if it isn't true any more and even if it were never true. In a pile of spaghetti code, a good lying comment can point to the needle in the haystack where the root cause of a bug is hiding.