Some historians trace the American cult of overwork to the hiring practices of post–World War II defense industries in the Santa Clara Valley of California. During the 1950s, these companies began recruiting scientists who were, as Sara Martin puts it in her 2012 history of overwork, “single-minded, socially awkward, emotionally detached, and blessed (or cursed) with a singular, unique, laser-like focus on some particular area of obsessive interest.”4