Even that is open to debate.
Yes. I should have added the caveat, "According to the latest research, which is not certain but which does seem to be an overwhelming consensus..." It's theoretically possible, but highly unlikely, that the earliest human ancestor came from Asia, or perhaps even somewhere else.
I should also have added that what I meant when I said race doesn't exist is that race does not exist as a scientifically meaningful word, as opposed to say, species. Some use it as I would use ethnicity, meaning a loose designation of the place and/or culture of someone's family. Jew, to me, is a religion and an ethnicity, rather than a race, but is interesting for being the only religion which is also an ethnicity.
Also to me, Hitler was primarily interested in using scapegoating to build unity and fervor. Getting people to agree to hate one or more other people does tend to be the best way of getting them united. There was a lot of pseudoscience flying around about the German and the Jewish race which was just that, pseudoscience. It was wrong on both counts. Germans are of course one of the peoples who have the most mixed ethnic background, living as they do in the middle of one of the highways of the world.
The pseudoscience claimed, and Hitler may have believed, that the German "race" was being sullied by the admixture of the Jewish "race", and that the thing to do was put a stop to it by killing all the Jews. Though I could hardly guess, he seems to have believed at least some of it, but may simply have believed the conspiracy theory that Jews were out to destroy Germans, and wanted, therefore, to destroy Jews.
The ridiculous nature of the Nazi Aryan concept was hard to miss. "Blonde as Hitler, athletic as Goering and fit as Goebbels," was often whispered.
They made him change his name after having it a couple of years, it was put in the list of offensive words that wouldn't submit like they do here.
