We're all partial to the odd tin foil hat theory here and there; Moon landing staged? Maybe. JFK's assassination a CIA conspiracy? Certainly seems plausible. Pyramids built by aliens? I mean, it's a bit out there, but after a couple of cans you'd probably enjoy a documentary on it. However, Earth is flat? No fucking way, mate.
Credit: ITV/Good Morning Britain
I'm just not having it. Still, this guy on Good Morning Britain was determined to argue his case for a flat Earth, even when confronted by an actual astronaut.
Mind boggling stuff, isn't it? Is there a group of people on this big round Earth more blindly determined to make complete and utter tits out of themselves than the flat earthers? Judging by this guy's blatant affront to science and logic, apparently not.
The chap in question is Mark Sargent. He believes that we all live on a disc and that NASA is keeping the truth under wraps for reasons known only to himself.
In the clip, Mark explains his reasoning to an audibly flabbergasted Piers Morgan.
"Point it out to sea and zoom in and you'll see it doesn't drop.
"All the world's a stage, and we're just in a big soundstage," whatever that means.
Mark continued: "The first blue marble shot of the earth was taken by Apollo 17 in 1972, and the second one was two summers ago.
"We had three decades with no blue marble shots. Why?
"If this place was built, it was built by someone, so we're not alone."
Morgan then turned to astronaut Terry Virts, asking him how he could prove that the Earth is, in fact, round.
In response, Virts simply held up a picture of the Earth from his book, made up entirely of pictures he took of our planet during his 200 days in space, and needless to say, it is not flat.
However, undeterred by the solid photographic evidence presented to him by a man who has actually been fired out of the atmosphere and witnessed the planet from above, Mark just brushed it off as a fabrication, claiming the image had been doctored.
How can you argue with that? Well, you can't really can you?
Maybe, just maybe, the tin foil hat brigade are actually onto something. But then again, no. No they definitely are not. The Earth is round, get used to it.