Stefan Buijsman (b. 1995) gained a master’s degree in philosophy in Leiden at the age of eighteen, after which he moved to Sweden to work on a PhD. Within eighteen months, instead of the usual four years, he gained his doctorate, making him one of the youngest ever PhDs. He is currently studying the philosophy of mathematics as a post-doctoral researcher. Along with Govrien Oldenburger he is the author of the children’s book The Kingdom of Sums (2018).
Stefan Buijsman is Sheldon Cooper from The Big Bang Theory, but with much better social skills, a man of immeasurable capacities and way above average intelligence.
– Svenska Dagbladet
Stefan is so smart that we are a bit lost for words. – Dutch Public Broadcasting Channel, NOS