I don't know how much of this is exactly true. The possibility of a point of perspective outside of the universe is there, it just requires the existence of at least one more universe and a perceptual bridge between them. Just because we view space from the inside doesn't mean an outside view doesn't exist, at least in theory. There are certainly higher orders of spacial dimensions. There's no reason to think that the totality of the bubble of space-time that we float around in, couldn't also be floating around in a fourth(or fifth, or higher)-dimensional hyper-space ether.
We don't have to throw out the baby with the bath water on the concept of an ether in order to accept Einstein's relativity.
I don't know how much of this is exactly true. The possibility of a point of perspective outside of the universe is there, it just requires the existence of at least one more universe and a perceptual bridge between them. Just because we view space from the inside doesn't mean an outside view doesn't exist, at least in theory. There are certainly higher orders of spacial dimensions. There's no reason to think that the totality of the bubble of space-time that we float around in, couldn't also be floating around in a fourth(or fifth, or higher)-dimensional hyper-space ether.
We don't have to throw out the baby with the bath water on the concept of an ether in order to accept Einstein's relativity.