Six years before Oppenheimer declared physics to be sinful after his success at building the bomb, he had discovered the existence of black holes as solutions to the Einstein equation. It took the physics community 30 years to fully believe him.
He found two things. (1) An astronaut jumping in takes infinitely long to disappear from sight (provided one could see him that long since the frequency of the light emitted by him goes to zero). (2) On his own wristwatch, only 2 days passed until he reached the surface of the star-mass black hole. Both results are still accepted.
Oppenheimer knew that if a trampoline were installed on the surface, enabling the astronaut to jump back up uninjured, both results are valid again: Up to his return to from where he came, 2 days would pass on his own wristwatch again. But for the outside world, once more an infinite amount of time would have passed.
This simple result is universally accepted but for some reason virtually unknown. It goes under the name “gravitational twins paradox.” No specialist denies it but virtually each will admit that it is new to him or her.
What is so important about such an overlooked item in the history of physics? It is that many since accepted “facts” turn out to be unphysical. All the famous mathematically allowed transformations of the textbooks that cause the “singularity of the horizon” to “disappear” are unphysical. Most standard textbook features of black holes, including Hawking radiation, prove to be mathematical artifacts. The whole field has to be re-started virtually from scratch.
If this is so, what are the consequences? Very simple: The new old Oppie black holes cease to be pussycats. When artificially produced, they do not stop growing inside matter. Moreover they do so, as chaos theory shows, in an exponential fashion: Just as this is observationally known from their giant cousins in quasars.
Okay, what then? Then the attempt to build artificial black holes on earth is maximally dangerous. But CERN is trying to do just that? This is correct. So a discussion needs to take place before the experiment is started at higher energy next week. Correct?