Fastidiousness or indecision? In either case an unwillingness to commit. A refusal to take sides is a sign of judgment, until its a sign of cowardice. The difference between reaching across a fence and sitting on it. "The best lack all conviction", Yeats says. No, the best just take their time to be convinced. Yet how do we tell a diplomat from a politician? Is there a difference?
Does that answer your question?