[lambda]

The fastest-gun-in-the-west problem can be a feature depending on your perspective.

If I come to Stack Overflow with a question, many times a quick, off the cuff but not perfect answer will solve my problem. Sure, it might not be the best possible answer, but if it solves my problem, why would I want to look for something else? The primary person getting value out of an answer should be the person who asked the question, or else no one will bother coming to ask their questions. If you put anything in to slow down the submission of answers, you reduce the value of the site to people asking questions.

And there's an easy solution if the top rated and accepted answer is actually incorrect or misleadingly incomplete; just edit it. Sure, it takes a bit more rep to be able to edit people's answers, but it doesn't take all that long to get that rep.