Sean Carroll

Other people propose that in different contexts, but we made the case that you don't need a fine-tuned, special, organized, low entropy beginning of the universe.

The universe can be eternal, it can last forever, but what happens is it empties out, just like our universe is doing.

A universe can be completely empty, the future of ours will be, but it still won't be perfectly quiet.

there are still quantum fluctuations that can lead to whole new universes coming into existence.

And as that happens, they all start in low entropy conditions and the entropy grows and gives that little part of the universe an arrow of time.

And the fun part is, the far, far past, the same thing happens, but in the other direction.

So there's sort of a symmetric shape to the universe where the future is a story of more and more universes being created and the arrow of time pointing in that direction.

The past is a story of more and more universes being created with people in them who think that we are in their past.

From our point of view, from the people living in it, they will always see entropy increasing because we always define the past.

as the direction in which entropy was lowered.

So it's a big U-shape that is perfectly symmetrical.

I get it now.

Well, we're trying, but the short answer is we don't know yet.

We don't have... That's not like a no.

Just say it.

It's very much not a no.

Oh, okay.

All the words, Neil.

All the words matter here.

Okay.