Christie's went to the 11-yr-previous twin daughters of the international director of Christie's Impressionist and Modern Art Department Nicholas Maclean, who prompt "scissors" because "Everybody expects you to choose 'rock'." Sotheby's said that they treated it as a sport of likelihood and had no specific technique for the game, however went with "paper". I'm taking a look at this through the eyes of my 11-12 months-previous.