Now, let's just fast forward, let me leap over many thousands of years, we've come to Neanderthals. They are not our ancestors. They are our cousins. We used to say that they lived from 200 something thousand to 40,000 and then they went extinct. We no longer say that because here in the audience there's tons of Neanderthal genetic material and many populations, except some populations in Africa because we did not have Neanderthals in Africa, we find just as you were saying, Lisa, that there are very intentional