The study walks the reader through the fascinating field of death awareness, which measures how people respond to reminders of death, like a news clip about a deadly car crash. When and how, he asked, does the prospect of death become relevant to employees at work? Grant argued that when people’s reactions to reminders of death are “hot” — anxious and panicked — those workers tend to withdraw. But when they are “cool” — more reflective, as in response to chronic reminders, the kinds, for example, firefighters face — those workers would be more likely to “reflect on the meaning of life and their potential contributions.”