Why does management make more than engineers or doctors?

Knowledge=Power
Time=Money

The definition of Power is:
Power =work/time

Substituting for Power and Time we get:
Knowledge=Work/Money

Solving for Money we get:
Money=work/Knowledge

So it doesn't matter how much work you do. The less you know, the more money you will make.

The question is not, Can they reason? nor, Can they talk? but, Can they suffer?
~Jeremy Bentham