In this case I noticed that the lace pattern was sort of drifting, so with each row I thought I'd just adjust it, but regardless, it kept drifting. Until about half-way down, at which point it corrected. Clearly I should have stopped and backed up, but I pressed ahead instead. Oh well. I probably won't rip it out now and after this baby has worn it, I'll be sure to pass it on to a non-knitter who (maybe) won't notice!
To knitting successes, mild mistakes, and even full-blown blunders! They're all beloved in some way or another (some more so than others, but still...)