> we're back at string theory as the only renomalizable description of quantum gravity.
I think you mean, we're back at "we're not sure if string theory is a viable theory of anything real".
Quantized gravity is not necessarily the right answer, and an insistence on this fundamental assumption might be the origin of these difficulties, eg. see Oppenheim's semi-classical gravity.
I think you mean, we're back at "we're not sure if string theory is a viable theory of anything real".
Quantized gravity is not necessarily the right answer, and an insistence on this fundamental assumption might be the origin of these difficulties, eg. see Oppenheim's semi-classical gravity.