Never joke about firing people, but don't hesitate to do it. That is the complete advice. Joking about firing people never brought anything good; firing people

Never joke about firing people, but don't hesitate to do it. That is the complete advice. Joking about firing people never brought anything good; firing people when needed, that is essential for organizations. There is a lengthy explanation in this: "Why our generals were more successful in World War II than in Korea, Vietnam or Iraq/Afghanistan" (https://www.youtube.com/watch?v=AxZWxxZ2JGE https://www.youtube.com/watch?v=AxZWxxZ2JGE)