 ongoing process of learning. And that, you know, the second nest a bird builds is going to be better than the first, and the third is better than the second. And that, you know, they're developing an understanding over time and have that appreciation of the physical properties of materials and what they're doing. And I think just to kind of make the connection, you know, from the scientific side of things to the social side of things, when one looks at a nest,