Again, "genetic" is not maybe what some people want to think it means, as an immutable thing. People's genes (as a population) change over time, education and

Again, "genetic" is not maybe what some people want to think it means, as an immutable thing. People's genes (as a population) change over time, education and culture select for different things. One group now, even if you said that they were "genetically" less performing, might well change within a few generations.