You're overvaluing IQ. IQ measures a narrow set of skills, and it mainly improves unskilled performance. For example, IQ only correlates with chess ability fo

You're overvaluing IQ. IQ measures a narrow set of skills, and it mainly improves unskilled performance. For example, IQ only correlates with chess ability for novice players. This correlation disappears by the master level. Additionally, it is not an unchangeable attribute, it just doesn't tend to change. This has more to do with people's circumstances and environment not changing than their inability to change. There is clinical data demonstrating IQ changes of over 20 points within the space of about 4 years. I've read about a number of cases where impoverished children with below average IQs achieve above average scores several years later with improved nutrition and an enriched environment.