WHEN AND HOW DID THE UNIVERSE BEGIN? Why are we here? Why is there something rather than nothing? What is the nature of reality? Why are the laws of nature so finely tuned as to allow for the existence of beings like ourselves? And, finally, is the apparent “grand design” of our universe evidence of a benevolent creator who set things in motion — or does science offer another explanation? In this lecture by Leonard Mlodinow, based on his co-authored book with Stephen Hawking, answers to these ultimate questions are answers based on the most recent scientific evidence. For example, Mlodinow and Hawking show that according to quantum theory, the cosmos does not have just a single existence or history, but rather that every possible history of the universe exists simultaneously. When applied to the universe as a whole, this idea calls into question the very notion of cause and effect. The authors further explain that we ourselves are the product of quantum fluctuations in the very early universe, and show how quantum theory predicts the “multiverse” — the idea that ours is just one of many universes that appeared spontaneously out of nothing, each with different laws of nature. They conclude with a riveting assessment of M-theory, an explanation of the laws governing us and our universe that is currently the only viable candidate for a complete “theory of everything.” If confirmed, they write, it will be the unified theory that Einstein was looking for, and the ultimate triumph of human reason.Tags: big bang, laws of nature, m-theory, multiverse, quantum theory, string theory, theory of everything, universe
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