Physicist Paul Davies, reviewing, for the Guardian, Stephen Hawking’s new book, The Grand Design (Bantam 2010), says this:
The laws of physics can explain, he says, how a universe of space, time and matter could emerge spontaneously, without the need for God. And most cosmologists agree: we don’t need a god-of-the-gaps to make the big bang go bang. It can happen as part of a natural process. A much tougher problem now looms, however. What is the source of those ingenious laws that enable a universe to pop into being from nothing?
And here we get into trouble, for Stephen Hawking favors the multiverse hypothesis, in which perhaps infinite universes, each with different physical constants, make different worlds, and spawn (maybe via black holes) new ones, one of which just happens to be ours. But, as Paul Davies notes, the multiverse has its own problems:
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