Fascinating story about typewriter repair:

From the age of five, Schweitzer said he spent evenings at home working on machines with his father at a workbench and watched as his father manufactured typewriter ribbons in the basement. By 10, Schweitzer was spooling ribbons and taking off cover plates, from the start deriving a sense of satisfaction from taking the gadgets apart and puzzling them back together again. Schweitzer joined his father in the trade full-time in 1959.