The first part, where she goes over the literature of giftedness and its causes, is fascinating. However, I found myself having difficulty taking her own research seriously, due to two principal factors. First, she seems to work mostly or even exclusively with MENSA people, a fringe of the population who are gifted but also, by nature of MENSA, felt rejected enough from the rest of the world to have a need to find their own people. I would be curious to have numbers as to what percent of the gifted population is not in MENSA, and see if her theories are reproducible there. Second, her cited examples of genius behaviour makes me wonder how deep her understanding of genius is, as she cites mostly people who are anything but (Elon Musk is the principal offender here, but also Zuckerberg, and even Steve Job who, even if I don't like, will admit was at least above intelligence). She sometimes cites true genius, such as Turing, but mostly billionaires.