I get a chuckle out of those folks that are trying to convince everyone about this flat Earth theory. They are serious, they really believe it and many of them are not dumb folks and they do make a heck of a case for such a nonsense thing to even consider.
I actually had the honor to have dinner a few years back with Buzz Aldren, just a wonderful gentleman and someone at the table with us brought up the conspiracy theory that they did not believe we ever landed or even went to the moon. Not a thing you say to Mr Aldren in a private setting because he will tear you a new one and not say a single cuss word doing so. Now there were some things he shared privately that many toss in to the stack of conspiracy theory that he can really open your eyes to but the flat earth and the we didn't go to the moon darn sure are not among them.