Some problems are very detail oriented, others are much more vaguely defined. As a manager, I assigned vague problems to one person because they weren't worried

Some problems are very detail oriented, others are much more vaguely defined. As a manager, I assigned vague problems to one person because they weren't worried about the lack of structure to the problem. The devil-in-the-details problems I assigned to another person. Both people were happier and clearly more productive. Could I have made the same decisions without an explicit personality framework in my mental toolkit? Yes, but it would probably have required more experience than I had.