I noticed that someone had the "Teacher" badge, which states to be for answering a question with a score of 1 or more. I suppose that's really for "first (successful) answer".
Because the answer indicated had a score of −3, and in fact no answers with non-negative scores.
So shouldn't this badge be cancelled? (I know, it doesn't work that way now.) It is a one-shot determination, so if the answer happens to rise momentarily positive (the first vote was up, followed by two downs, for example, with the eventual average being 2 downs for each up) it is awarded, when that would seem to be "mistaken".
For many people, it might get re-awarded to a different answer. In general, I think you shouldn't be too quick to award it, but should wait for the average voting to show. Otherwise, why bother at all? Just say it's for answering, period.