Unitarity and Black Holes
Information about physical states is preserved in the laws of physics, allowing for predictions to be made in both forward and reverse directions. However, the implications of the no hair theorem and the nature of Hawking radiation suggest that black holes with identical properties may lose their unique histories, rendering their initial states indistinguishable. This raises profound questions about the accessibility of information in the universe, particularly in extreme conditions like those surrounding black holes.In this clip
From this podcast

The Science of Everything Podcast
Episode 145: Relativity and Black Holes
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What about the theory of quantum mechanics in relation to the episode Episode 145: Relativity and Black Holes and the clip Unitarity and Black Holes?
What is the relation of the theory of quantum mechanics to the episode Episode 145: Relativity and Black Holes and the clip Unitarity and Black Holes?
What is the relationship between the theory of quantum mechanics and the episode Episode 145: Relativity and Black Holes as well as the clip Unitarity and Black Holes?