It is impractical to explain or justify every decision, sometimes the managed need to appreciate that and do what they are asked to do. I am not an advocate of mushroom leadership, people need to buy into you and you need to have your teams back as that way they will fight for and more importantly with you. But there are also times when you simply can't share everything and they need to understand and respect that. Good management is good management. I've been in business for 30 years and in that time the fundamentals have remained the same, in the same way as you remember the good teacher.
That makes more sense. I thought you were advocating a "me boss you worker" sort of mentality.