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Roger Penrose talks to Marcus du Sautoy

Fashion, Faith, and Fantasy in the New Physics of the Universe

Hay Festival 2017, 

Arguing that string theory has veered away from physical reality by positing six extra hidden dimensions, Penrose cautions that the fashionable nature of a theory can cloud our judgment about its plausibility. In the case of quantum mechanics, its stunning success in explaining the atomic universe has led to an uncritical faith that it must also apply to reasonably massive objects. Turning to cosmology, he argues that most of the current fantastical ideas about the origins of the universe cannot be true and that an even wilder reality may lie behind them. Penrose is one of the world’s foremost theoretical physicists.

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Roger Penrose talks to Marcus du Sautoy