Sorry for the strange and slightly out of nowhere discussion, but over the past few months I have had the great privilege of getting to read most of Mr Sagan's books: Cosmos, Pale Blue Dot, Demon Haunted World, Dragons of Eden..., and, the most recent of which, Billions and Billions (yes, I missed Contact, that will be for a time when I can read such a massive book haha). Throughout that whole la…