[The person who asked the question][1] can [change their mind about the accepted answer at any time][2] by clicking the check mark again, or clicking the check mark next to another answer. [Moderators cannot override this][3], though obviously anybody with sufficient access to the database probably could...and [almost certainly won't][4]. [1]: http://meta.stackexchange.com/q/120568/189912 [2]: http://meta.stackexchange.com/a/5235/189912 [3]: http://meta.stackexchange.com/a/105815/189912 [4]: http://meta.stackexchange.com/a/60214/189912