I wrote an answer to this questions: Why are cambions unable to reproduce amongst each other?
It received a lot of positive attention and showed signs (at first) of being a helpful answer. However, it turns out I missed an important criterion in the question that my answer does not meet...to the point that it's basically a wrong answer (ie. not helpful to the OP). I edited the answer to make it clear to further viewers that it's not really a valid answer.
After further discussion with the OP, I see no elegant amendment I can make to my answer...I would personally consider it obsolete. What is the right thing to do? Should I delete it? Re-edit to declare it obsolete? Something else...?