I was intentionally vague. People seem to read some opinion in it? (given the up and down voting) I have no idea what it means, its just an interesting fact. All I know is that doing it without moving paper was much harder before computers. I didn't mean to say: Because lobsters couldn't do it neither can we. Nor: We have computers now, everything is easy! IT just dramatically changes the puzzle. Not sure we should try history based prediction.