Carl Allamby became an expert diagnostician after spending his childhood ducking his head under the hoods of Chevys and Fords with the older guys in his East Cleveland neighborhood. If a car whined and growled while turning, or if it squeaked on startup, he could run through a checklist in his head, zero in on the problem, and fix it.
Today, after a career overhaul, he does the same thing with people as an emergency medicine resident, having graduated from medical school this year at age 47.