Why do you insist on saying that I "don't believe" in genetic components when I've literally said the opposite? The people who wrote the stuff on the Wikipedia site I was provided with and their (researcher-)sources seem to try to tell you and me both "hey, this is an interesting field of study but it's very complicated, many genes are involved, we are far from understanding them or being able to model them, be very careful with interpreting correlations and for (m)any practical purposes (such as thinking about how to structure educational environments), you really should consider quite a lot of things not directly related to genetics." What's so controversial about that and what overwhelming evidence does that go against?
edit: Sorry, to clarify, you are saying that "Two parents of higher IQ are much more likely to produce an offspring of higher IQ than median" because of genetics as the main determining factor?
edit: Sorry, to clarify, you are saying that "Two parents of higher IQ are much more likely to produce an offspring of higher IQ than median" because of genetics as the main determining factor?