Undecidability in Physics: Even a God's-Eye View Can't Predict the Future
2025-03-07
Could Laplace's demon predict the future of the universe? Quantum mechanics, chaos theory, and recent research on 'undecidability' suggest the answer is no. Even with perfect information, the future of certain physical systems is unpredictable. The article uses Cris Moore's pinball machine as a vivid example of undecidability, which transcends chaos, meaning some questions are simply unanswerable, even for a demon with infinite computing power. This research reveals the boundaries of physical knowledge and has profound implications for our understanding of the universe.