Explaining global variation in internet speed
I saw this on Twitter earlier today: The narrative seemed right, so at first I retweeted. But then I looked closer at the map and realized it couldn't be right.…
If cities are bad, why do people move there?
This is a natural follow-up to my prior post about fertility, and how cities (or population density in some sense) cause fertility to decline. In fact, cities seem to be…
Fertility questions: the role of population density?
There is a worldwide decline in fertility: The COVID-19 years seem to have been particularly bad on some countries. The poster child for future problems is South Korea: Even Reuters…
Book review: The Fight for our National Intelligence (Raymond Cattell)
Raymond Cattell was one of the early 1900s eminent psychologists. Like Meehl, he had a philosophical bent with some odd ideas in ethics. That ended up getting him into trouble…