"I think that the evidence strongly supports the notion that the differences between large populations is generally miniscule when compared to the differences w

"I think that the evidence strongly supports the notion that the differences between large populations is generally miniscule when compared to the differences within those populations and that if you compare individuals across populations you can find people who are far more similar to each other than they are to the average of their respective populations." This is called Lewontin's Fallacy. Take height, for example. You can find a man and a woman who are both 5'2", while the average height for women is somewhere around 5'7" and for men somewhere around 5'10". Indeed, the "difference between large populations"--in this case, three inches' difference in average height between men and women--pales in comparison to the "difference within those populations": the height of a healthy adult male can be anywhere from 5' to 7'. In other words, there can be great variation within either or both of two large populations, and yet statistically significant inherent differences can exist between the averages of those populations.