Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
303 | AMA | February 2025
Sean Carroll
It would look like, well, let me emphasize the important point here. The amount of baby universe you need to pinch off is very, very tiny. It's just a little Planck scale-sized thing. You don't need to undergo the entire history of the universe backwards. It's not anything like that at all. What it would look like is a number of particles, photons or whatever.
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