As much as I hate to admit it, it occasionally happens that upon further consideration I must conclude one of my own comments or answers is incorrect or too quickly constructed.

These postings commonly lead to a whole lot of metadiscussion which in some cases amount to nothing more than noise with regards to answering the question.

My question is: "What to do with these postings?". Should I delete them, or just add a 'mea culpa' comment in the thread?