"[T]here's a 3rd impossibility. In order to get this stuff out of a black hole, it's going to come out half matter and half antimatter, because the... fireball has to be all , and when radiation cools off to material particles... 50/50 matter and antimatter. ...So now it's impossibility cubed. Do I need to any further?"
January 1, 1970
https://en.wikiquote.org/wiki/John_Dobson_(amateur_astronomer)