Sean Carroll

It's just remixing things Feynman said, but in a way that is necessarily degraded.

It's practically a theorem, right?

The, uh...

information, when you run it through some processing, it only gets worse over time.

So you're not really listening to the actual Feynman.

If you want to listen to the actual Feynman, read his books or watch his videos or whatever.

So I think I feel sorry for the people who think it's cool to do it.

I mean, it might be different if you're just doing it for purely entertainment purposes, but it's not a good way to learn and it's not honoring the person you're doing it for.

Sean Bentley says, my 14-year-old son had a well-timed quantum physics question right when you called for AMA questions.

Here it is.

If a particle is in a superposition, do the different positions move through space at identical speeds?

And if not, could the different spatial positions of the particle experience different passages of time?

So this is actually an excellent question because there's sort of two ways of answering it.

One way says no, and one way says yes.

And there, you know, sort of depends on what you, how you interpret exactly what is going on in the question.

So the way that would say yes, different parts of the wave function experience different passages of time is, you know, wave functions spread out unless they're already infinitely spread.

To be a little bit precise about it, just to be, we'll be precisely correct and then we'll

be more hand-wavy about it, a quantum state of definite speed is a quantum state of definite momentum, right?

Those are the same thing.

And in quantum mechanics, just good old ordinary quantum mechanics of a single particle, the only kinds of states that you can get, the only kind of wave function you can get with a definite velocity or momentum