Do / Teach

“Those who can’t do, teach”.  We know this is a little generalised, and not entirely true. 

Anyway, there’s another view on it too: “those who excel at it, can’t teach it”.  There are examples of this:  Einstein was apparently a poor teacher, and one of ice hockey’s greatest players, Wayne Gretzky, was not a very good coach. 

The exertion of learning was different for those who it comes easy to, or if they learned it a long time ago.  Also, teachers need to communicate material with the student in mind, not with the goal of showing how much they know.