I noticed that as well, thinking it might be the daringfireball.net / markdown guy, but checked the info: Author: https://www.nber.org/people/jonathan_gruber?p

I noticed that as well, thinking it might be the daringfireball.net / markdown guy, but checked the info: Author: https://www.nber.org/people/jonathan_gruber?page=1&perPage=50 https://www.nber.org/people/jonathan_gruber?page=1&perPage=5... vs. JOHN GRUBER https://daringfireball.net/contact/ https://daringfireball.net/contact/ Different john / jonathan grubers.