This quote ends with a summation of Crawford's _Shop Craft As Soulcraft_, a so-so book from a guy who left a directorship at a DC think-tank to start a shop fixing old motorcycles. The way Catmull phrased it, I'd be surprised if he hadn't read the book.<p>One of Crawford's points is that as we differentiate and specialize manual labor out of our economy, we lose an aptitude (mechanical literacy, self-sufficiency, the inclination to tinker before giving up on objects) that is subtly important to all the non-manual things in the economy.