This amazing video has a conversation between Carl Sagan, Stephen Hawking, and Arthur C. Clarke. I was alive when this was recorded, and I had actually spoken with Sagan before this point, so I am sorry I missed this historic chat in person. Luckily there were cameras rolling, so I get to enjoy the event all these decades later. Pay attention as three of the most brilliant people the human race have spawned take a few moments to lay out how the universe actually works for the rest of us.
