There is also a different aspect: time --- US presidential debates are timed affairs, and having someone constantly nagging and talking over you means that your message is lost not just because it is drowned in your opponent's sea of words, but also because you may slow your speech down to be understood better, therefore conveying less information to the public. With this in mind, sometimes the only solution is to throw your shoe at your opponent, literally or metaphorically.

Source author: André Xuereb andre.xuereb@um.edu.mt