E.g. I might be blocked by some bug I am working on, and have no idea that Jim encountered this 2 months ago and has it all worked out. Normally I wouldn't have

E.g. I might be blocked by some bug I am working on, and have no idea that Jim encountered this 2 months ago and has it all worked out. Normally I wouldn't have thought to ask Jim because he's currently working on something else. So this quick meeting is a way to discover that somebody else has already solved the problem I'm working on.