I think the "current serious thought about black holes" is about quantum theoretical effects at the event horizon. Seems there are some problems with reconcili

I think the "current serious thought about black holes" is about quantum theoretical effects at the event horizon. Seems there are some problems with reconciling quantum entanglement at the horizon with the fact that nothing can return from beyond the event horizon apart from Hawking radiation. This results in the "Firewall Paradox" [1]. One of the proposed resolutions of the paradox is the claim that directly at the event horizon, invisible to outside observers, a kind of ultra-thin particle inferno exists due to the breakdown of entanglement. This would make it effectively impossible to enter any black hole. (I don't really understand any of this, consult wikipedia and the referenced articles for more correct explanations). [1] https://en.wikipedia.org/wiki/Firewall_%28physics%29 https://en.wikipedia.org/wiki/Firewall_%28physics%29