Just from a muscle perspective, the entire freaking flow of the Mississippi

rivers filtered three times a day in pre-colonial America, you know I mean there's so many muscles in that river

got you all that filtration I pull all that crap out of it you know it yeah a big

super just a filter yeah just filtered all that water and you don't have that anymore.

You know people don't realize how many muscles like are in a show.

So the question... muscles like or in a shoal.

So the question is, how did something with no eyes and no brain end up with this perfect mimic of a black flylaw. How do you get there, Hal?

Right on low, but it freaks me out.

Because you're like, you know, they didn't see them.

You know what I mean? They never saw them.

And you know, and you got some of these systems that are really nice and intact.

The problem is they're becoming less and less.

Yeah.

It means the glaciers really didn't. they're becoming less and less. Yeah.

It means the glaciers really didn't touch

the southeastern Appalachians.

Yeah.

You know, there wasn't this, you know, big wall of ice

that purged all the species in the north.

Yeah.

And so you got this big long time frame for things

to speciate.

...