My (highly annoying thesis) went through about 5 rounds of revisions.
The spouse and I revised Version 4 by accident. And then Fedexed it to the grad school.
The permanent-archives version still contains 10 typographical errors, one egregious factual error, and three incorrect references- and is missing two lines. Also, about 30 sentences are missing periods after the citation. Good thing nobody ever reads the print copies of science theses.
Oops.