Comments by "Beer_Dad" (@Beer_Dad1975) on "What Actually Expands In An Expanding Universe?" video.

  1. He kinda lost me when he stated that the universe is homogenous - there is literally no evidence that this is the case - on every scale we have measured the universe has structure. He's kind of accepting existing subjective assumptions on anisotrophy, which don't currently have any observational evidence.
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  2.  @seeminglynn7528  But there are structural variations in the CMB, so whilst the CMB is isotropic, the universe is not homogeneous - at least based on my understanding of the term - and thus we have the large scale structure - and every time we increase our observational scale, we find ever larger structures - so what exactly is expanding? Maybe it's just semantics and I'm not understanding his definition properly. I'm still lost unfortunately. Oh well I guess that's why I ended up pursuing computing instead of physics.
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  3. Yes, I am expanding with the universe... but my clothing is not...
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