Drucker taught us to think. His valuable insights and theories both published and in the classroom, did not come from the scientific method or mathematical calculation, but by the straightforward method of observation and using his brain and reasoning to logical conclusions. Like another genius of note, Albert Einstein, he did not arrive at his theories in a laboratory surrounded by microscopes, computers, and white-coated scientists, but in the laboratory of the mind. It is a fact that Einste...
