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Ep: 99 David Deutsch‘s ”The Beginning of Infinity” - a retrospective in 99 minutes
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What We're Observing Is a Good Explanation
We now know that stars are cold, but hot, not dim, but bright. They are extremely distant, hot furnaces fusing hydrogen nuclei, protons, interhelium and other more complicated processes as well. We only get to that notion not because we can actually observe the core of stars where these reactions are taking place. In fact, it's very rare for us to be able to observe directly a star. So how did we get this knowledge? We had to conjecture it. And what we mean by good explanation is something that is hard to vary.
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