In the last two weeks, thousands of Twitter employees have gotten a small taste of what it's like to work for Elon Musk: the out-of-nowhere firings, the threats and the bluster, the pubescent jocularity, the day-to-day uncertainty and the urgent demands to work through the night. If there's such a thing as a warm and cuddly boss, Musk has long been the opposite to his employees, who now number .