Education is in some respects one of the most stagnant of all major industries. A farmer from 150 years ago would not comprehend a modern farm. A factory worker from 150 years ago would not be able to function in a modern factory. But a professor from 150 years ago could walk into a classroom today and go to work without missing a beat.

via Many-to-One vs. One-to-Many: An Opinionated Guide to Educational Technology -- The American Magazine.