GR_fan's latest activity

Fair enough! I'm comfortable not discussing my own research, and just discussing results that are already mainstream. :)

I worry that I wasn't clear and may have misled you here. The idea of a "multi-multiverse" (as you described it) is my own idea. I...

Agreed! But that's not the point I was making. Importantly, I never argued that we should consider a multiverse that somehow includes...

I don't think this is correct. A fairly large number of cosmologists endorse a multiverse. In the multiverse context, the Cosmological...

Here's the claim you made: The point I was making with my alternative history is that, even if we reject the Cosmological Principle...

I never said that any specific possibility is probable. On my view, every one of these models about what the universe is like...

Notice that my comment was about regions that are arbitrarily far beyond our cosmological horizon. This statement is consistent with the...

Again, my point was never that we should think this is a realistic possibility. Instead, my point was that General Relativity includes...

Right. Agreed. Two points. First, it's not clear what sort of features can be reasonably "baked in" to the universe. It's not clear --...

Such things are matters of opinion, yes. But the argument for a white hole not being in our past seems pretty strong to me: because not...

Right. My apologies, again, for the confusion. In the future, I'll try to do a better job at double checking what I wrote before...

In the original Oppenheimer-Snyder model, the two regions are made to match without a thin shell, because the extrinsic curvature from...

Indeed! Agreed. (My only misgiving is that many of the arguments people give for thinking that various solutions of the Einstein Field...

Fair enough. I agree.

Well, yes and no. You are right that the condition enforced by the condition is important. However, with the right thin shell on the...