Aaron Zinger on Range Widely

Thanks! Heisenberg had tried to calculate how much uranium you would need for critical mass and ended up with an absurdly large amount that could never be acquired in time to be useful. I don't have a great reading rec but here's a quick description of the story (from John McCarthy!): http://jmc.stanford.edu/articles/teller.html There's also a play I saw a long time ago that I remember being great, Copenhagen by Michael Frayn, that's largely about this.