The good news is that we’ve made progress on the core issue of the black hole information paradox: we can state with a fair amount of certainty that (at least) one of the assumptions we put into the problem is incorrect. We cannot simply look at the space outside of a black hole when we calculate the outgoing radiation; there’s a continuous interplay between that radiation and the interior of the black hole itself. As the black hole evaporates, the interior begins to contain information that’s linked to the outgoing radiation, and can no longer be ignored.
But we’re still a long way away from determining exactly where that information goes, and how it gets out of a black hole. Theorists disagree over the validity and soundness of many of the methods that are currently being employed to do these calculations, and no one has even a theoretical prediction for how this information should be encoded by an evaporating black hole, much less how to measure it. The black hole information paradox will no doubt be making headlines numerous times over the coming years as developments continue, but a sufficient solution to the big question — of where does the information go — is arguably as far away as ever.Ethan Siegel, “No, Stephen Hawking’s Black Hole Information Paradox Hasn’t Been Solved” at Forbes