There’s a view of the human situation that goes something like this: 14 billion years ago, give or take, the universe exploded into being. The Big Bang didn’t create everything, but it did provide everything necessary to create everything else: a collection of immutable physical laws, a hot soup of subatomic particles, an unthinkably vast quantity of energy. After 10 billion or so years of expansion and cooling, the universe contained some trillion trillion stars, and at least as many planets. Around that time, on one of those planets orbiting one of those stars, a random series of chemical reactions produced self-replicating molecules. Chemistry made way for biology as four billion years of further chance developments generated a bewildering diversity of living organisms. Eventually …

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