[Jaysun]

If instead of saying that the universe is expanding, I said that everything within it is shrinking, would you still face the same conceptual crisis?

(Hint: the two ideas are mathematically equivalent.)

Thanks for the hint but I've heard the comparison before. And no, I wouldn't face the same conceptual crisis.

[Physicist]

And no, I wouldn't face the same conceptual crisis.

Then you must be making some sort of mistake, you see? The two are equivalent, so they must be equally ridiculous or reasonable.