All we see is that things are moving away from each other, but if you see from the center of an observational universe, as seen by you they're going away from you. ...[R]edshift is not an actual thing. This is not an actual model of the universe. It's not a model of an actual universe, it's a model of an observational universe... [T]hat's the difference between this model and all of the other cosmological models. All the other cosmological models have taken the universe to be actual. What do we mean by actual? We mean that it arises by a process in physics. Since universes are fairly well known not to arise by processes in physics, I don't think that we have any actual universes. I think we're stuck with observational physics. I think this stuff that we wrote on the board is about an observational universe, not about an actual universe.

What It Means

This is a placeholder explanation generated by the low-overhead model. It interprets "All we see is that things are moving away from each other, but if you see from the center of an observational universe, as seen by you they're going away from you. ...[R]edshift is not an actual thing. This is not an actual model of the universe. It's not a model of an actual universe, it's a model of an observational universe... [T]hat's the difference between this model and all of the other cosmological models. All the other cosmological models have taken the universe to be actual. What do we mean by actual? We mean that it arises by a process in physics. Since universes are fairly well known not to arise by processes in physics, I don't think that we have any actual universes. I think we're stuck with observational physics. I think this stuff that we wrote on the board is about an observational universe, not about an actual universe." in the context of "" to mean that wisdom is timeless.