Sorry, but there is no scientific basis for this assertion. Our understanding of the brain and the ways two brains can differ from each other is in its infancy and we have no evidential basis to assert there is "no difference between" any two specific brains, let alone no differences between the distributions of millions of brains in two populations. Brains can differ in literally millions upon millions of ways. Your assertion might apply to a small handful of the less interesting ways like avg . BTW, male and female brains have already been shown to differ in many ways that are significant enough to likely produce psychological differences.
Yes, male brains and female brains are different. You're very clever. Of course, I said there's no difference between the brains of an African *man* and a European *man*.
Yes, of course the neural connections are not atomically identical from one person's brain to the next; if they were we'd all have identical personalities and thoughts. This is completely besides the point, however, since I was clearly *not* talking about those kind of minute differences and was in fact talking about the kind of difference that transcend individuality and are representative of one population versus the other. The claim that there are no such fundamental differences between the brains of Africans and Europeans is a matter of *scientific fact*.
Furthermore, the claim that "our understanding of the way two brains can differ from each other is in its infancy"; is either ignorant, or dishonest. You're trying to imply that we haven't the foggiest about it, when in fact we know a great deal about these subjects, certainly more than enough to dismiss as *pseudoscience* the idea that there is some sort of substantitive difference between the brains of different groups which is based entirely on biological factors.
Oh, and then there is the fact that every single psychological and behavioral difference has to be a product of brain differences, because all psychology and behavior is a product of the brain.
If that were true; your entire argument would fall apart since indeed, despite your claims, we know there are no such differences. Again, we're talking about substantitive differences; not minute differences that have no fundamental effect on the brain as a whole. You're trying to argue that there is some sort of difference that separates a white person's brain from a black person's brain; when in matter of fact the differences between the average black and average white brain are exactly the same sort of differences we see between two different and random white brains.
Every cultural or experiential impact on human psychology and behavior has it impact only via the physiological differences they cause in the brain itself, which is always the proximal cause.
And that is why this argument fails. Again; there are no such fundamental differences between the brains of different ethnic groups. We may see differences in populations based on things like diet, but those are not *fundamental* differences that linger once diet changes. The only way we could even remotely take serious the possibility that these sort of fundamental biological differences exist between ethnic groups, is if indeed there were some genetic differences which directly affect the brain or our tendencies. For instance a genetic change that causes a population to become entirely colorblind might cause significant cultural changes in that population. (incidentally, it would be those genes that are the proximal cause and not the brain, since the brain would be influenced by them and not the other way around)
So, we know for certain that there are brain difference significant enough to produce psychological differences (btw, the tiniest brain difference you can image could have major psychological impact).
No, we do not know this. Yes, we know this for individuals, and things like brain damage. Again, however, we are talking about fundamental biological differences that would apply to entire ethnic groups. What you're describing are minute differences across individuals, differences that are the result of initial starting conditions of neural structures, followed by randomized factors in neural growth and decay, along with our own behaviors affecting those structures. To come up with an analogy you might be able to understand more clearly; what you're trying to argue in saying that there are fundamental brain difference between different ethnic groups is that a black person's brain is operating on MacOS, while a white person's brain is operating on Windows. However, the only argument you're bringing forth to support this is the fact that your windows computer has different files and directories on its hard drive compared to mine. Which may be true, but that doesn't change the basic point that they're still running on the same basic hard and software.