[genwin]

The principle is meant to apply only at a sufficiently large scale. If any particular scale goes against the principle, one can enlarge the scale to see if the principle still applies.

[baddox]

That still sounds like a blow to the meaningfulness or usefulness of the principle.

[genwin]

Why would it? If you enlarge the scale and find that the principle applies, it's useful.

[hachiya]

And if all else fails, just scale out further... until you're effectively outside the universe.

Stipulate the presence of additional universes.

Then call the whole theoretical collection a "multiverse."

Voilà. We have no reason to believe this reflects reality, but it must be assumed...

...in order to preserve the Cosmological Principle.

[Dylan16807]

genwin is talking about actual measurements, not speculation. Why are you throwing out a strawman?

[genwin]

You never get outside the universe, if it's infinitely large (and there's no evidence to the contrary).

[carsongross]

Exactly