Some questions collect a considerable number of nearly identical correct answers within a short period of time. On questions like that, this clearly wrong strategy sometimes pays off:
- Post a barely useful placeholder answer within seconds
- Go back and replace your placeholder with a good answer
While you are working on step #2, other answers may flow in; you can use them to provide additional inspiration for your corrections. If you finish within 5 minutes, your answer would look like the quickest correct answer to the OP, even though others may have provided correct answers faster than you did. The OP subsequently accepts your answer, at the expense of someone else who was more diligent.
It may be desirable to automatically close the grace period window, and mark the question as edited when one or both of the following conditions are met:
- You replaced more than 90% of the original text from your answer,
- You clicked [Load new answers] while editing your post during the grace period.
This will arm the OP with enough information to choose which answer to accept.