Quotes About Laplace's Demon

The physical notion of determinism is different from destiny or fate in a subtle but crucial way: because Laplace's Demon doesn't actually exist, the future may be determined by the present, but literally nobody knows what it will be.

Laplace's Demon, the hypothetical imp that knows the instantaneous positions and velocities of every particle in the universe, was said to be able to calculate the entire future or past by plugging these values into the equations that express the laws of mechanics and electromagnetism.

Michael Shermer in the paper "Exorcising Laplace's demon: Chaos and antichaos, history and metahistory," History and Theory 34:59–83 (1995). Shermer's