You do know that the Japanese and Han Chinese are not in the same genetic subpopulation - right?
That the country of China is not nearly as genetically uniform as Japan?
That the Japanese are genetically closer to the dominant genetic population of Malaysians than they are to the most important genetic population of Chinese?
Oh good Gods. Okay, let's take a step back.
1. You do agree that genes influence IQ?
2. You do agree that 50 - 85% of an (unpoisoned, healthy, mentally stable) adults' IQ score is dependent on their individual genes?
So, let's just start there.
Because as for now, your red-herring is getting a bit stale.
I asked you why Chinese who grew up in massively
lead-polluted noisy Chinese cities, on average, have higher IQ's when compared with Luxembourgians. And what was you answer? You have no idea.
No idea?
Not a single idea has popped into your head as to why if you were to pull a random human of E. Asian heritage living in a polluted Chinese city you'd have a increased statistical likelihood of plucking a human out with an IQ greater than 100, as compared to if you randomly picked out a person from clean, non-polluted, Luxembourg.
No idea at all? Well, here's an idea, perhaps lead-poising is raising the average IQ of your average Chinese. Or, perhaps it's their low quality diet? Or, just maybe, given their IQ aligns closely with other E. Asians' IQ, it's simply a matter of genetics.
A little something called: Evolution. Maybe give it a look up?
As for the origins of Japanese. No one really knows - just yet. But, they will. For now, good evidence suggests that one population of humans lived on the archipelagos 20,000 years ago (at least). Another population commingled with that population 7000 years ago.
Molecular Biology and Evolution:
Model-Based Verification of Hypotheses on the Origin of Modern Japanese Revisited by Bayesian Inference Based on Genome-Wide SNP Data.
Results from a genome-wide, single nucleotide polymorphism (SNP) data strongly support the hybridization model as the best fit for Japanese population history. An initial divergence between the Ainu and Beijing group was dated to approximately 20,000 years ago, while evidence of genetic mixing occurred 5,000 to 7,000 years ago, older than estimates from the archaeological records, probably due to the effect of a further sub-population structure of the Jomon people.
--o--
Get this, all humans originate from Africa. It's the selection pressures that were important, as well as just dumb luck. Thus, suppose some humans 25 millennia ago became the humans that live in Malaysia and Japan today. Well guess what? The selection pressures across the 20000 years are totally different. Neanderthals, were wandering about 40,000 years ago - now they're extinct. Some of their DNA is in some human populations. Not just their's, other hominids DNA as well. But not all populations of humans. Do you think maybe this might matter? Maybe? Or you have no idea? Or is asking the question Wrong Think? Because White.
E. Asians lived through the most extreme weather conditions of nearly any humans around 80 - 60 millennia ago. Massively expansive hellish ice-sheets of barren rock and snow. This is not the same environmental pressures as a tropical island where you can wander down to the ocean and grab a crab for lunch.
There's a reason why they call it '
island time'. Try that in the middle of a glacial ice sheet, and you're dead. No descendants for you. Don't plan for the winter on an island. No worries. Do that in the north - you're dead.
Now, I know you want to pretend it's just one big fat coinkydink that the humans who were put under these massive selection pressures for tens of millennia just so happen to also correlate with the humans who make particle accelerators and invent the materials used in iPhones. Yup, just one big fat coinkydink. But, you're probably wrong. Worse still, as a Science Denier, you're making the problem WORSE. Because when you deny reality, then you leave people to use their imagination to come up with made-up reasons. Or they conflate reasons. Or, even worse, they actually CAUSE events to happen - because they just KNEW it was going to happen. Like the kid who just knows he's going to get dumped, then acts like a dick to the girl he likes. She of course, doesn't want anything to do with him. And he just KNEW that she like that.
You're doing this to people. Your idiotic ideas about 'Race' are in fact CAUSING racism.
I've lived on numerous continents, in various cultures - guess what? Most high IQ people, like high IQ people. They really don't care if you have a tan or not, green, brown or blue eyes or if they're squinty eyes or not. They also don't like to hang out of low IQ people. For obvious reasons. Now, that's not to blame the low IQ person who "
likes me drink and footy". They didn't do anything right or wrong. Neither did the person who just happens to have an IQ of 140. It's f*cking luck. And to those of IQ around 140, remember, your children will probalbly regress to the average. So, try not to be a dick / smart-arse
RE: Wrong Think
You don't do that with Global Climate Change. Even though you have no idea what percent effect humans are having. As in, you literally have no idea. But, in that instance, it aligns with your cognitive biases (I'd not be surprised if you don't also Because White climate change as well). No, then you're interested in finding the real Scientific causes (or I assume you want to). AND even though you have no idea what role humans play, you think it's important to find out. Not so here. Here it's servings of red herring, one after another. Simmered in notions of racism and a glaze of Wrong Think, Because White.
See how that works out for "society". And try not to confuse virtue with vise.