The trades suffer from low prestige, and I believe this is based on a simple mistake. Because the work is dirty, many people assume it is also stupid. This is not my experience. I have a small business as a motorcycle mechanic in Richmond, Va., which I started in 2002. I work on Japanese and European motorcycles, mostly older bikes with some “vintage” cachet that makes people willing to spend money on them. I have found the satisfactions of the work to be very much bound up with the intellectual challenges it presents. And yet my decision to go into this line of work is a choice that seems to perplex many people.