Ken Goldberg says

The “ghost in the machine” appears when thousands of Internet viewers attempt to control the mysterious movements of a single planchette in Ouija 2000. In contrast to most network-control systems, in which a single user controls a single robot, in Ouija 2000 multiple users come together to collaboratively control a single industrial robot arm. This suggests the Central Limit Theorem, developed by de Moivre and Laplace in 1812. This statistical theorem describes how independent random variables can be combined to yield an estimate that becomes more accurate as the number of variables increases. Ouija 2000 comments on mysticism and technology by posing the question of telepistemology: What can we know at a distance?