I happen to look at the “um/uh” situation totally differently. For instance, a subordinate will want to make sure he can get in all his thoughts with his boss

I happen to look at the “um/uh” situation totally differently. For instance, a subordinate will want to make sure he can get in all his thoughts with his boss by making sure he can fill a gap of silence while he’s thinking. A boss has no such problem - when he talks people listen. Well they better.