Thanks for the excellent article. It brought this picture to mind:
An alternating current, personified as a human moving steadily along some circuit (life's patterns are hard wired after all) flipping between professional and student at each increment.
I think as professionals in an industry that emerged rather than being defined we're still trying to define an objective balance between the two. The lack of definition is responsible for the fogged dialogue that usually accompanies knowledge expeditions. And why the same questions are asked over and over.
My 2cents =)
This issue however is about a small spelling issue:
One of the most important ways to learn something [s/it/is] to experiment