This clustering is not really news--it's been noticed for years. One possible explanation is "assortative mating". The theory is that geeks marrying other geek

This clustering is not really news--it's been noticed for years. One possible explanation is "assortative mating". The theory is that geeks marrying other geeks raises the likelihood of having hyper-geeks as offspring, and today it's much easier/more likely for geeks to meet and breed with one another than it was in the past.