What practical use do we even have for scientific racism?
For someone who claims an IQ of 168 you asked, frankly speaking, a stupid question.
The question he literally asked may well be stupid, but I think it's charitable to interpret it as asking what practical use we have for scientific racism that wouldn't violate some ethical injunctions. Likewise, if someone asked how to kill all the fleas on a cat I'd assume they mean that the cat must remain alive and in good health (example taken from here).
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.