Scientific racism/ race realism for this market means that a there are fundamental differences in the intellectual ability of different races. For this market it doesn't matter which race has the advantage. Proven true means a study must be done that has the conclusion that there is a difference between races in intellectual ability or brain power. It needs to be a big enough difference that it isn't statistical error. The study would need to be peer reviewed and replicated by others and accepted by a majority of the scientific community. Read about scientific racism on wikipedia https://en.wikipedia.org/wiki/Scientific_racism#:~:text=The%20division%20of%20humankind%20into,those%20who%20support%20these%20ideas.
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3.00Would any intellectual difference count, no matter how slight, and no matter how narrow the part of intelligence is affected? e.g. if Middle Eastern people are genetically 0.01% faster on average at recognising written characters than aboriginal Australians, due to the slight selection pressure towards literacy from living in a writing civilisation for much longer