It's a physics thing - our current manifestations are biochemical, so our perceptual experiences are constrained by the laws of thermodynamics that hold sway at

It's a physics thing - our current manifestations are biochemical, so our perceptual experiences are constrained by the laws of thermodynamics that hold sway at that scale. Of course, sooner or later they'll figure out a way to upload it all into some kind of a computational environment that's entirely different from anything that can be conceived based on the laws of physics as we understand them now; that exists entirely independent of the notions of "time" and "space" as we currently perceive them. But them I'm not sure we'd still be "us", anymore, by that point.