What makes someone historically notable

Stephen Wolfram answers questions from his viewers about the history of science and technology as part of an unscripted livestream series, also available on YouTube here: https://www.youtube.com/watch?v=IE03Z481PVg&list=PLxn-kpJHbPx3IO8b1yvkNyASj9i_Tw4n8&pp=0gcJCdAEOCosWNin

Topics: How the idea of discrete space developed - Why personal records matter for the history of science - How people and fields become part of history - Encounters with the past through people, machines and artifacts