Quote:
Originally Posted by evman150
What is beyond that? That question is like what philosophers call a category error. "What lies on the outside of everything?" How can there be anything beyond everything? That statement contradicts itself and is thus a category error.
The universe is borderless and centreless. Trying to conceptualize the "shape" of the universe is not really possible. You can look at all the hypercubes you want, aint gonna help you conceptualize an isotropic four dimensional universe.
Here is a gedankenexperiment to attempt to help you imagine the difficulty involved:
Imagine you are on the surface of a (expanding - fwiw) beachball. Does the surface of the beachball have a border? Does the surface of the beachball have a centre? Bring this example up from 2d\3d to 3d\4d and you have what our universe is. A three dimensional entity wrapped around a fourth dimension, no edge, no centre.
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yes, except the beach ball is filling space, what is the universe expanding to?