A friend asked me if Drucker's The Effective Executive is more Saruman, Radagast, or Gandalf like.

I thought Claude's answer was pretty astute, especially the last line:

"I would classify Drucker as predominantly Gandalf-like, with a slight lean toward the Radagast end of the spectrum. While his work is often interpreted through a Saruman lens (especially by those looking to extract simple management principles), his deeper philosophy is about creating environments where people and organizations can flourish naturally. … Radagast/Gandalf wisdom often gets reinterpreted through a Saruman lens because it's easier to package and sell that way."