Great leaders know what they ask their people to do. Leaders like that are less likely to hurt their people because of their own ignorance.

Proverbs 28:16 says, "A ruler who lacks understanding is a cruel oppressor, but he who hates unjust gain will prolong his days." How can you be a good general if you've never held a rifle? How can you ask your men to take a hill if you've never been shot at? Now I'm not saying that you have to be the best marksman, or the best navigator, or the best cavalry officer, but I am saying that you need to know how to shoot, how to do orienteering, and how to ride, or else you will never be a great leader. Similarly, the worst leaders in business are the ones that try to tell engineers what to do and how long it should take but they have never done any engineering in their life. The ones who tell marketers how to tell a story and what promotion strategy they should use but they have no idea about how to do marketing. Etc. etc. Ignorance is not bliss in this case. Ignorance leads to pain and stress.