biologist.

Well, the...

But this is outside, so I could be misspeaking, but my understanding is that the early hair follicles would have been occurring in reptiles.

And I don't know which family, but clearly it's a common ancestor between humans and birds.

So you go back to that point.

And so mammals, or the reptile ancestors of mammals, they would have been going there where they have these dense sort of hairs.

Hair is just a single... shaft right has a little bit of variation as you're testing with your curly hair right but aside from that like you have that sort of there and so that it would be protective and they would be form forming the the increase in the density of these follicles as opposed to birds and dinosaurs that had a whole bunch of innovation where you get a lot of complexity in these organs and they would form three-dimensional shapes and they would form cell populations that would eventually evolve into feathers and like the actual process is orders of magnitude more complex than what we as mammals are doing.

What do you think that's affecting? Are we