If you've ever had a class from a world renowned expert on a topic, you know that sometimes world-class experts can't teach.A good teacher is someone who can express himself/herself in a manner to help a non-expert learn.
That means that they can express an idea in many different ways and in many different forms so that a student can learn.
An acquaintance was a journeyman utility infielder in the major leagues. He had an opportunity to take a hitting lesson from Willie Mays. He says it wasn't helpful--because Willie Mays could do things that "mere mortals" couldn't, and thus never had to worry about things such as bat speed and picking up the spin on the ball.
That means that they can express an idea in many different ways and in many different forms so that a student can learn.
An acquaintance was a journeyman utility infielder in the major leagues. He had an opportunity to take a hitting lesson from Willie Mays. He says it wasn't helpful--because Willie Mays could do things that "mere mortals" couldn't, and thus never had to worry about things such as bat speed and picking up the spin on the ball.