In part 4 I looked at some “large” stuff. Now let’s think a little about the possibility that infinite things may exist.
Depending on the physics or metaphysics you subscribe to, infinite or eternal may be reality. In the physical universe we don’t live behind an “event horizon.” There is no secret universe hiding behind some information barrier.[1] Think of the universe as existing on the surface of a ballon.

M31. One of my favorite galaxies. It's bigger than our island.
Someone is blowing up this ballon. As it gets larger, the surface stretches and points formerly close together become further and further apart. There isn’t a real “center” of the universe, but everything is getting further from everything else. Space itself is expanding. Another interesting thing is going on: the further stuff is from you, the faster it is moving away from you.[2] Space is expanding
locally, not into some extra dimension and not by pushing out some “edge.”[3]
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