Broomsticks with Feedback.
'Being right is occasionally useful in bars but it's very useless in life. It just doesn't open avenues for learning.
[Hospitals] engage in serious errors. The nature of Lourdes is that they don't get better at miracles because they're not learning from their mistakes.
400 years ago everyone believed that broomsticks could fly. Then these views of the world bifurcate and we have broomsticks that still don't fly terribly well and Jumbos that fly rather well. Jumbo Jets are just broomsticks with feedback.'
A Leader's decisions create errors that teach and invite us (educate - educare - 'to draw out') to overtake her, and make different errors for others to learn from and overtake us.
Contempt for the mistakes of others and fear of making our own are why true Leaders are rare.