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Paul Steinhardt, "Inflated Expectations: A Cosmological Tale" (Open Agenda, 2021)

Ideas Roadshow Podcast

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The Big Bang Theory

According to the big bang theory, distant regions that we see n the universe hadn't been in causal contact before. The idea of inflation was to say they were much closer together in the past and then thrown apart during inflation,. But actually, secretly, they were close together. So you immediately get around the contact problem. Another thing you mediately get around is the flatness problem. Ah, what was i how was inflating solving the flats problem? It was olving it by suppressing it by a huge amount. And so to day, why shouldn't you see a very curved universe? That was the original flatedness problem. Can now roll that film backwards. A universe which

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