>>11269166I'll let you bait me into this reply, but give it a rest already.
If I am in a Lorentz boosted frame my spatial slices are different. My spatial slices no longer have all the nice symmetries I have in the comoving frame. In terms of matter too, we see the matter distribution is anisotropic (e.g. see the photo of the CMB at the beginning of the thread). The Lorentz boosted frame is distinguishable from the comoving frame.
In Minkowski space if I'm in a Lorentz boosted frame it looks no different than any other frame and there's no way to say which is the moving frame. This is what you guys got drilled into your heads in special relativity, which is why I assume you all wandered into this thread thinking a preferred frame of the universe was wrong and a dumb idea. That's why it was kinda fun to call you guys out, but I'm getting a little weary of this discussion, so bye, happy new year