You have very badly misread the behavior genetics literature if you think "heritable" means "not subject to change with changes in environmental conditions." It

You have very badly misread the behavior genetics literature if you think "heritable" means "not subject to change with changes in environmental conditions." It does not. Let me provide a reference for my statement, from four eminent behavior geneticists writing a review article together. "Moreover, even highly heritable traits can be strongly manipulated by the environment, so heritability has little if anything to do with controllability. For example, height is on the order of 90% heritable, yet North and South Koreans, who come from the same genetic background, presently differ in average height by a full 6 inches (Pak, 2004; Schwekendiek, 2008)." Johnson, Wendy; Turkheimer, Eric; Gottesman, Irving I.; Bouchard Jr., Thomas (2009). Beyond Heritability: Twin Studies in Behavioral Research. Current Directions in Psychological Science, 18, 4, 217-220 http://people.virginia.edu/~ent3c/papers2/Articles%20for%20Online%20CV/Johnson%20(2009).pdf http://people.virginia.edu/~ent3c/papers2/Articles%20for%20O... Really now, before commenting about public policy on the basis of heritability it would be a very good idea to learn what the word "heritability" means and what it does not.