Fair, but quantum mechanics gives us Hawking radiation, which may or may not provide information (in principle) about what went into the black hole.
Also, there are causal arrows from the black hole to everything it pulls on, and those are ultimately the sum of causal arrows from each particle in the black hole even if from the outside we can’t discern the individual particles.
Fair, but quantum mechanics gives us Hawking radiation, which may or may not provide information (in principle) about what went into the black hole.
Also, there are causal arrows from the black hole to everything it pulls on, and those are ultimately the sum of causal arrows from each particle in the black hole even if from the outside we can’t discern the individual particles.