True, although this reminds me of an old Von Neumann joke (it was probably a Newton joke once): A colleague walks up to Von Neumann at a party. "Hey!" he chal

True, although this reminds me of an old Von Neumann joke (it was probably a Newton joke once): A colleague walks up to Von Neumann at a party. "Hey!" he challenges. "Two locomotives are speeding towards each other on a track. They begin ten miles apart and are both travelling at 30mph." "A fly on the hood of one locomotive flies to the other locomotive at 60mph, then returns to the first, and keeps going back and forth between them until the two crash, killing the fly." "How far has the fly travelled?" Von Neumann considers, then gives the correct answer. "It's true," his colleague says, "you can instantly see the insight to any problem. You knew that you could merely sort out how long it takes and then work out the distance from the fly's speed." Von Neumann frowns. "It seemed simpler to sum the series in hy head, and it's a more general solution."