Whenever you are talking, you must consider your medium. If your face were on a big movie screen, you might get your message across with a wink or an eyebrow raise. On radio, however, that would be meaningless. Because listeners couldn't see your wink, you'd have to say something like "Hi, Cutie." Because listeners couldn't see your raised eyebrows, you'd have to say, "Wow, I'm surprised!"
