I liked everything and listened with great interest up to the point near the end about flat-earthers. No Lex!!! Scientists and no one else has to read anything that flat-earthers have to say before judging. And by the way... controversial? Since when flat-earth is "controversial"? It's flat stupid and trolling and there is nothing to talk about or nothing to look into. It's an internet phenomenon that we pay any attention to people who claim this. Once upon a time - not long ago, I am 44 and I remember clearly this time - anyone who would suggest that earth is flat would be mocked and dismissed as a prankster or a village idiot by anyone around. And I mean by anyone, even by the most uneducated person in the most remote place on earth. Now, all the village idiots have joined together in the internet and we are supposed to listen to them? No way! The shape of earth is a fact of life. Known to everyone. One of the factest facts of life. I don't have respect for absolutely everyone and every bull&amp;%$t they might say. When we hear that earth is flat, the least we should do is roll our eyes. Actually it's the most polite thing we can do. For f*%#^ sake.