"The real goal of this next generation of accelerator experiments is to try and distinguish between the many possible models of high-energy collisions that are relevant to the early universe, and decide which ones are correct and which ones are beautiful but really are only fantasies."
What is the 'shape' of the finite universe? If not a structure similar to a moebius strip, then how is it possible for the universe to be finite, and yet not have a bounding limit, and if it has a bounding limit that implies (in my layman's brain) that there's an inside and an outside, which then forces me to contend with "what's outside?"
Hawking took away one dimension, and compared our universe with a balloon, and an ant living on it. While the ant can never reach the edge of the universe (there are none), it would be possible for the ant to go all the way around, ending up where it started.
However! If the balloon was growing at a certain speed, the ant would never be able to complete the trip around.
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