Really interesting. Ah, study that found a population or a group of salamanders that are a sexual in their reproduction and that they've been a sexual in their reproduction for a very long time looks like fine 1,000,000 years, which is extraordinarily a long time, uh, to be a sexual. So five million years and we're really f do to think about two different factors here. Where would we expect to see, or what kind of environment would we expect to find the selling mentors in if they're going to be a sexual for five years and something about the population size? How big a population size do you think these guys have had over the years? So that the answer to the first question is that we generally would expect this situation of a sexual salamanders that have persisted for so long to be occurring in a stable environment, and they could be stable in a couple different ways. They can be stable in terms of things like climates or a biotic factors, um, so that there's not a lot of unpredictability, and it could be stable in terms of the interactions that the settlement er zehr having so um, for example, with parasites or predators or things like that. Um, so in both cases, we expect the environment to be stable because we remember that the disadvantage of being a sexual is that you have lower diversity, and it's harder. Ah, Teoh Ah, Coop. With changes, right, we tend to see sexual reproduction when there's a changing environment, and that's because the changing, because the reproduction produces offspring that are diverse and better able to handle the changing environment. We expect to see this in a stable environment. Um, the question of population size, at least certainly expected to be a large population. Um, remember that just due to chance, if you have a population that's five million years old, just to a chance, they're going to been some catastrophes over the years that could threaten to wipe out the population. And if it's a small population, they very likely would have been weight out. So, for its persist for five million years, it must be a very large population. It may be spread out across ah, fairly ride region as well, and so that makes it more resistant, um, to extinction, just because if you have a large number of individuals, a few of them are more likely to survive, uh, catastrophe. So in general, then we expect to see salamanders that have a sexual reproduction for a long period, time to be living in a stable environment and also to have a large population size.