In this case the title is not an overstatement. Kenneth Arrow passed away on Feb 21 at age 95. The thread title is a copy of this blog post https://afinetheorem.wordpress.com/2...-arrow-part-i/
He was the youngest ever winner of the Nobel Prize for Economics (1972), introduced economic theory into the field of social choice. He was truly ahead of his time. During grad school I remember a class discussion where a fellow student tried to make a point based on one of Arrow's theories, to which the professor responded "if you think you understand Arrow's theory and how it applies here, that only proves you definitely don't understand it".