Edit: This question isn't a duplicate of Acceptable solution for 'answer copying'?. The quote in the highest voted answer on that question is "Bottom line: if you want to get up-votes, WRITE A GREAT ANSWER." that works well in that question. But in this question the situation is that the potentially great answer could just be copied and made to look as if the author of the answer was the one who did the copying. This is not the same situation.
This isn't a huge issue, but it's something I've witnessed more than once now.
Take this question for example: How to open new dynamic form with dropdown menu[Select tag]
When I posted my answer about using jQuery's
on change event listener there was one other answer which only said something along the lines of, "you can use AJAX for this", nothing more - not helpful at all, especially as AJAX wouldn't be used for this anyway.
After posting my answer I commented on the other answer saying that AJAX wouldn't be used and a few minutes later that answer was changed to also use the
on change event.
The problem here is that as this edit was done so shortly after the answer was submitted, the original content doesn't appear in that answer's edit history.
Anyone looking at the two answers would think hey, this guy [edited answer] posted the correct solution first so this answer should be accepted.
How would this be dealt with? What's in place to stop people making a really quick invalid answer then editing it as soon as somebody else has posted up a working solution to replicate that?