We agreed that we could go on about this forever . There is no established science and there never has been and there never will be . The ptolomeic system existed for 2500 years before it was proven to be incorrect . People believe that heavier objects fall faster than later ones for about that long as well . Doctors used to prescribe cigarettes because they thought it was good for people's health . So everything that I have read in scientific journals seems to suggest that there is no perfect bridge between race and intelligence through DNA . Does not mean it doesn't exist it just means that it has not been established but often they go a step further and say if it has not been established it doesn't exist . This is probably the best summation that I have found on the subject and it comes from the American psychological Association which I don't have a whole lot of appreciation for but you might "In response to the controversy surrounding The Bell Curve, the American Psychological Association's Board of Scientific Affairs established a special task force to publish an investigative report focusing solely on the research presented in the book, not necessarily the policy recommendations that were made. In their final report, titled Intelligence: Knowns and Unknowns, some of the task force's findings supported or were consistent with statements from The Bell Curve. They agreed that: Intelligence test scores have a correlation of 0.5 with GPA and 0.55 with the number of years in school. IQ scores have predictive validity for adult occupational status, even when variables such as education and family background have been statistically controlled. There is little evidence to show that childhood diet influences intelligence except in cases of severe malnutrition. Regarding statements about other explanations for racial differences, the APA task force stated: The differential between the mean intelligence test scores of Blacks and Whites (about one standard deviation, although it may be diminishing) does not result from any obvious biases in test construction and administration, nor does it simply reflect differences in socio-economic status. Explanations based on factors of caste and culture may be appropriate, but so far have little direct empirical support. At present, no one knows what causes this differential." And in this gap of knowledge statistics and philosophy maybe actually ahead of the science Many of the ancient Greek's realized that the Atom may be infinitely divisibleand it pretty much took until the 1930s to show that there were subatomic particles below protons and neutrons .