Hawking preached M theory to the crowd, which was reported as follows:
“He closed by outlining "M-theory," which is based partly on ideas put forward years ago by another famed physicist, Caltech’s Richard Feynman. Hawking sees that theory as the only big idea that really explains what he has observed.
M-theory posits that multiple universes are created out of nothing, Hawking explained, with many possible histories and many possible states of existence. In only a few of these states would life be possible, and in fewer still could something like humanity exist. Hawking mentioned that he felt fortunate to be living in this state of existence.”
The belief in M theory requires a belief in String Theory which in turn requires a belief that infinity divided by infinity equals 1. I.e. undefinable divided by undefinable has a specific finite value: 1. These assumptions are made cavalierly in String Theory, as even Hawking admitted.
Also non-credible is the concept that matter just jumped into existence from nothing whatsoever. The problem here, unaddressed by Hawking… ever, at least in his books, is that nothing means no constraints as well as no preceding mass, energy, fields, quantum soup or pudding or pies, or rules. Yet without rules, such as self-limitation, there should be mass, energy etc. popping into existence everywhere, all the time, from absolutely nothing, and without constraint. And that should be empirically observable, everywhere, all the time, and without constraint. It obviously is not.
These issues don’t stop Hawking from his celebrity appearances. And no one ever asks him about them, at least not in public.