> Another often-suggested escape from Buridan’s Principle is noise—the introduction of randomness into the system. In theory, one can balance a ball on a knife edge; in practice, this is impossible because tiny random 2 vibrations will cause the ball to fall, despite our best efforts to balance it. Moreover, balancing the ball on a knife edge requires fixing very precisely both the position and the momentum of the ball, which is forbidden by Heisenberg’s Uncertainty Principle. A four-legged or human ass must also have random noise and be subject to the Uncertainty Principle, so it cannot be put into a situation where it will hang forever on a knife edge of indecision.