This assumes both parties are after the same thing. There are people that doesn't actually care what the right thing to do is, and only want to do what benefits

This assumes both parties are after the same thing. There are people that doesn't actually care what the right thing to do is, and only want to do what benefits them. Ideally incentives should align, but often times what is good for the team / company isn't necessarily what's good for the manager and vice versa.