Laplace's demon

Laplace's Demon is named after a French scientist named Pierre Simon Laplace. He imagined a being that could predict the future, like a magical creature. This imaginary being was called Laplace's Demon. Laplace's Demon is like a demon that can know everything in the universe - it can predict the future and know all the information about the present. Laplace's Demon knows the exact positions, velocities, and energies of every atom in the universe. This means that it could use this detailed information to make perfect predictions about what will happen in the future. The idea of Laplace's Demon was too good to be true, so it was never accepted as a real thing.