  As an intuitive interpretation, imagine that \(A\) and \(B\) are speaking on the phone but that they are disconnected. Who should call back? Each would prefer that the other call back, so as to avoid paying for the call. However, each prefers paying for the call to not talking at all. If both try to call back, then both will receive a busy signal. The payoff matrix summarizes this situation. This kind of case is sometimes called an impure coordination problem, since it enshrines a partial conflict of interest between players.