Professor Sean Carroll, in his debate with William Lane Craig, asked Dr. Craig the following:
Dr. Craig never replied, but here is the paper that Professor Carroll was referring to:
https://arxiv.org/abs/gr-qc/0301042
Quote:I will repeat – the quantum eternity theorem, a sensible analysis of the history of the universe, might be with the rules of quantum mechanics. He claims that someone else said there might be a singularity in quantum gravity but he gives us no understanding, he simply repeats his previous analysis. So, I want to draw attention not to my model but to the model of Anthony Aguirre and Steven Gratton because this is perfectly well defined. This is a bouncing cosmology that is infinite in time, it goes from minus infinity to infinity, it has classical description everywhere. There is no possible sense in which this universe comes into existence at some moment in time. I would really like Dr. Craig to explain to us why this universe is not okay.
Dr. Craig never replied, but here is the paper that Professor Carroll was referring to:
https://arxiv.org/abs/gr-qc/0301042
