For Jon the jokes had to be in conversational language, but powerful conversational language. That’s where I really learned how to write. He used to say things like, “Specificity is key.” In other words, if you’re making a joke about, “Why don’t you have another ice cream cone?” if you say, “Why don’t you have another tub of rum raisin?” it gets funnier because now you’re specific in the flavor. He’d go, “What do I preach?” I’d go, “Specificity.”