The best way to learn about modern culture is to have a teenager; you learn quickly what is valued highly. One of those things that a teenager can teach you is the extreme value of being cool. Now "cool" means different things in different contexts. In general, it means desirable. In talking about clothes, it means fashionable. For 14-year-old boys talking about girls, cool means attractive. But at its root, cool means ... the opposite of hot. It means the opposite of passion. It means looking like nothing will get you stirred up. Like nothing bothers you. Like nothing can affect you.