Interesting conversation. The problem I see with the Flynn effect, as can be observed by Prof. Haier arguments, is that they have not updated their knowledge on genetics and the genome. Evolution can occur rapidly (in ecological time) and not only due to epigenetic regulatory changes, but also due to genetic changes. I recommend the book by James A. Shapiro - Evolution in its 2nd edition that has both the technical and the general audience sides of the science.