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Neither of those observations are from black holes.



That is not the claim I addressed. He said Hawking radiation has not been observed. I provided citations that it had.


It's been observed in the same way that magnetic monopoles have been observed: physical analogs have been built, but nobody has observed an actual magnetic monopole.

"Nobody has observed a magnetic monopole" is still true, even if systems that behave like quasi-monopoles have been built.

My conclusion (that we can't know for sure that black holes produce Hawking radiation) only makes sense if I was talking about observing actual Hawking radiation rather than analogs, which I was.


The claim that black holes are perfectly black is subject to those same constraints.


No, it hasn't. Not in the real world. They have observed Hawking radiation in simulation (in an analog computer with some quantum properties).




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