Fact is, walls or not, all the world’s a classroom. Fact is, life’s a classroom where curiosity reigns with both over-the-shoulder interest and the joys of struggling alone. […] Gutenberg, Darwin, the Wright Brothers and even modern computer whiz-bangs show that innovation comes from accumulated knowledge, constructive errors and the magnificent happenstance of “information spillover” (information intended for one gets picked up, carried, and improved by another). And good stuff happens anywhere—labs, workshops, hangars, garages and yep, classrooms.
— Robert Genn in What’s this classroom thing all about?