Charles Liu
👤 SpeakerAppearances Over Time
Podcast Appearances
That's basically what he's asking.
And then the corollary, which means all trajectories are predetermined.
That's right.
So if that's true, right, then should we do physics backwards as well as forwards?
Can something happening in the past cause what's happening or predict what's happening in the future and vice versa?
Hence the retrocausality.
Retrocausality, right.
Fancy word, but just time running back.
Great word, though, if you think about it.
That's right.
Pretty clear what it means.
So here's the bottom line, in my opinion, on that one, which is, again, a great question.
Thank you, Andrew.
The idea is, does time already fill all of the dimension, the fourth dimension, or does it not, right?
What do you mean by fill it?
What do you mean by fill it?
Well, okay.
Think of the universe as a big, tall glass of water, okay?
And time zero is the bottom of the glass.
As you're filling the glass, you're basically adding more and more content in the vertical dimension of the glass, right?