There is this saying that “A’s hire A’s and B’s hire C’s”. The idea is that the best employees (A’s) are smart and want to be smarter. They also don’t want to be babysitting a bunch of bad employees (C’s) and cleaning up their messes. That’s why you can trust A’s to hire other A’s. The problem with average employees (B’s) is they feel insecure about their position on the totem pole. They are really concerned that their job is in jeopardy. That’s why, if given the chance, B’s would hire a bad employee (C’s) because it makes them look better. That’s the theory, at least.