This is an amazing story. I have been pretty self-congratulatory about starting a STEM PhD at age 64 with the hope that I can get it done by the time I am 70. A guy named Lucio Chiquito from Medellin, Colombia, just submitted his dissertation to University of Manchester in England at age 104. I thought, well, he probably got it in Sociology or Spanish or History, but no, he got it for work on a tough mathematical characterization of the flow of water in rivers. Guess what I am studying? The study of the flow of water in rivers. His dissertation is a harder version of what I am doing. Notice his little helper down in the bottom right of the photograph. The thing that I liked the most about the guy was, when they asked him what he was going to do now, he told them he wanted to work on perfection his English and German–continuing to learn. Beautiful stuff.