Build into each club a device that (a) senses where the flag is, (b) calculates where the clubface is actually aiming, (c) and tells aloud how much the trajectory is off. Super-deluxe version also (d) inertially monitors the swing, (e) tells you why you hooked or sliced, (f) is made of an indestructible material because, well, you know why, and (g) calculates when to say, “I’m shutting up now, because I seem to be spoiling your fun without really benefiting your game. Would you like to hear some music?”