Essentially he’s claiming that Hawking radiation either does not exist or will be at such small levels that it won’t prevent black holes from evaporating. My impression from physicists is that we’d have to be pretty wrong for it not to exist or to exist at much lower than predicted levels. But there’s also a more serious problem with this whole approach: the physics that predicts that black holes will go poof is very much connected to the physics that would suggest that it might be possible to make mini black holes in the LHC. If Hawking radiation doesn’t exist then the chance that a black hole could form in the LHC goes down, not up. So the total danger attached to “The LHC will make black holes that won’t go away” is very small.
Essentially he’s claiming that Hawking radiation either does not exist or will be at such small levels that it won’t prevent black holes from evaporating. My impression from physicists is that we’d have to be pretty wrong for it not to exist or to exist at much lower than predicted levels. But there’s also a more serious problem with this whole approach: the physics that predicts that black holes will go poof is very much connected to the physics that would suggest that it might be possible to make mini black holes in the LHC. If Hawking radiation doesn’t exist then the chance that a black hole could form in the LHC goes down, not up. So the total danger attached to “The LHC will make black holes that won’t go away” is very small.