The Black Hole Information Paradox
Physics insists information can never be destroyed. Black holes appear to destroy it. Both of those cannot be true.
1974/75 (Hawking radiation), 1976 (the paradox stated)24 min read
Dutch theoretical physics
Gerard 't Hooft
1946
Utrecht theorist who shared the 1999 Nobel Prize in Physics with Martinus Veltman for showing that non-abelian gauge theories are renormalisable. In 1993 he proposed dimensional reduction in quantum gravity — the idea that the degrees of freedom in a region are encoded on its boundary — which Susskind developed into the holographic principle.