Shawn Ryan

So again, I think that that's a funny thing.

I do think if you talk to a cosmologist, they believe in like the cosmological constant, like,

isn't necessarily being actually like, sorry, there's this experiment right now that's trying to promote that maybe the cosmological constant is changing over time.

And a lot of string theorists love that.

A fellow, a faculty member when I was in grad school at Harvard, Rafa is kind of colleagues with Andy.

he is very into the SWAMP1 program and trying to test things.

I think that I am not too into the experiment to know like why a lot of cosmologists don't trust the results yet or whatever.

But I think that a lot of things are up in the air in the sense of, you know, like there's always qualifications to things.

So like it's good to at face value trust the actual results of an experiment, but you want to understand what are the extra like

what is it actually seeing versus what you're actually over-interpreting it as seeing.

And so one option that a lot of people like is, okay, maybe the cosmological constant is changing over time and then it'll be asymptotically flat or the wrong sign, opposite signs to be where a string theory likes to live.

So I just, I guess I ended up being very agnostic in a weird way, which is not good because somebody should just answer and say, yeah, blah, this is our model of M to CDM.

Oh, no, no, no, sure.

No, no, sorry.

So there's a sense in which, yes.

Like, so I think what I'm saying is I'm taking it to be like, okay, you're looking at these various stars far away and you know, like, okay.

So the fun thing about physics is you're often saying the laws that I have here are the same everywhere.

So if that's true, I know like some features of my star or stellar formation.

So I know like the spectrum of the lines that are supposed to be there.

So if it's moving further away, I'm going to see like different frequency shifts and things like that.