By now you know that either Barbie or Oppenheimer, or possibly both, are the greatest movies ever created in the history film. Already people are talking about follow up films to tell what are known as “origin stories,” but frankly I couldn’t care less about the back-story of Barbie or Ken, or even for that matter Robert Oppenheimer.

That said, there would never have been a film on Oppenheimer if two men, joined by other scientists, hadn’t written letters to President Franklin Roosevelt. One of those letters was delivered to him this week (August 2) in 1939. It was that letter that alarmed Roosevelt and the US Government so much, that a crash program, which would be led by Oppenheimer, began to go critical…