This issue caught my eye as well, and I find the argumentation quite sloppy in some parts. Also see my other post https://news.ycombinator.com/item?id=27808936

This issue caught my eye as well, and I find the argumentation quite sloppy in some parts. Also see my other post https://news.ycombinator.com/item?id=27808936 https://news.ycombinator.com/item?id=27808936 Now take several of these "insignificant" factors, add interaction effects, and we potentially get a much richer picture.