In the words of Dear Leader:

“[BUSH] I’m the decider and I decide what’s best.”

And for people unclear on the concept, here’s the definition:

The ideology of the Fuhrerprinzip sees each organization as a hierarchy of leaders, where every leader (Fuhrer, in German) has absolute responsibility in his own area, demands absolute obedience from those below him and answers only to his superiors. The supreme leader, Adolf Hitler, answered to no one.

And the results are very familiar:

the selection of unsuitable candidates often led to micromanagement and commonly to an inability to formulate coherent policy. Albert Speer noted that many Nazi officials dreaded making decisions in Hitler’s absence. Rules tended to become verbal rather than written; leaders with initiative who flouted regulations and carved out their own spheres of influence might receive praise and promotion rather than censure.

Eh?