Fermi paradox

The information paradox arises from the conflict between quantum mechanics and general relativity when considering what happens to information falling into a black hole. Quantum mechanics suggests that information cannot be destroyed, while general relativity implies that information could be lost forever once it crosses the event horizon of a black hole.

The paradox was first highlighted by physicist Stephen Hawking, who proposed that black holes emit radiation (Hawking radiation) and eventually evaporate. This led to the question of what happens to the information about the physical state of particles that fell into the black hole, as it seems to disappear beyond the event horizon.

Efforts to resolve the paradox have included various hypotheses, such as the idea that information is somehow encoded on the event horizon (the holographic principle) or that it is released back into the universe through Hawking radiation. These solutions aim to reconcile the principles of quantum mechanics with the predictions of general relativity.