And I'll do a whole video on it. But looking at linguistic structures, we believe, or one model is, is that many of the people who speak these Indo-European languages are these ones that are derived from that Proto-Indo-European and that includes Greek and languages related to Greek. We're talking about Latin. We're talking about the Germanic languages, including what I'm speaking right now, which is English, which is fundamentally a Germanic language with a lot of Latin influence. We're talking about Celtic. But we're also talking about more Eastern languages, like Persian and Hindi and Bengali. All of these have a lot of commonalities to them, which we believe gives evidence that at one point, it was a very closely related group of people who are coming from this Caucasus region.