Interesting! The idea that the entire universe was once in the Goldilocks zone sounds weird - though it certainly follows from the cooling that the universe underwent after the big bang. However, the universe apparently lasted in the zone for only a few million years. That means any life that formed then would have to stay dormant for the billions of years before being seeded on planets like Earth. So it still doesn’t explain the billions of years of prior evolution. May be I’m missing something.
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