A collection of interesting links covering science, education, politics and culture, with Scott Alexander's commentary and analysis on each. Longer summary

This is a links post collecting various interesting articles and studies. Notable topics include: an IQ study predicting US gains, a social site called Omnilibrium trying to improve filtering, FDA allowing 23andMe genetic tests at higher prices, evidence about pre-K education having potentially negative effects, and news about polio eradication. The post also covers topics like genetic engineering in China, studies about police reducing crime, and cultural analysis of urban violence. Many links come with Scott's brief commentary or analysis putting them in context. Shorter summary

Scott responds to authors of a Victorian intelligence paper, remaining skeptical of their findings and addressing critiques of his original post on IQ change speeds. Longer summary

Scott Alexander responds to the authors of a paper on Victorian intelligence who replied to his earlier critique. He remains skeptical of their findings, arguing that the Victorian sample was still more elite than modern comparisons, even when broken down by occupation. Scott also addresses a point from his original critique about the speed of IQ changes, acknowledging some validity to commenters' objections but explaining his reasoning. He concludes by suggesting that concerns about dysgenic effects on IQ may be overblown given the likely timeframe for genetic engineering or transfer to nonbiological life. Shorter summary