It's astounding how hard it is to get people to stop trying to find the solution to a problem that's not really a big thing. I have the habit of saying "this is worth about a five minute investigation. After that we're wasting time." When we get to the five minute point they're totally invested in figuring the thing out.

Now that I've read this thread, I might avoid trying to figure out things at all, though I kinda think that's an overreaction. Hmmm. Maybe I should just not state that there's any kind of time limit on it... I don't know.