this post was submitted on 29 Sep 2024
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The balloon analogy fails at demonstrating the 3 dimensional nature of space-time. The dough analogy makes way more sense, ESPECIALLY at scale, because on a universal scale, the galaxies won't look as if they're expanding.
Doesn't the balloon also fail to illustrate scale effectively? No one here is expecting a 1:1 model of the universe expanding, but a small section showing the basic principle.