Sean Carroll
👤 SpeakerAppearances Over Time
Podcast Appearances
The photon passes us by.
It has a wavelength.
It has a path.
It's all about us.
It's all about us.
It's all about us.
Well, even better, it's all relative, as Einstein would have said.
It's relative from what the observer sees of the photon.
There just isn't.
That's right.
It travels through a path in space-time that takes it no time from its point of view.
Right.
Okay.
You guys got to stop anthropomorphizing elementary particles.
Yeah, there is time that the extent of a muon's path through the universe does include a passage of time.
But the muon as an elementary particle has no hopes or desires.
Sorry.
As far as we know, there's no connection between whether entropy goes up and down and whether the universe is expanding or contracting.
You could have it anyway.
There's an empirical fact about our universe that entropy was low when the universe was relatively tiny and has been going ever since.