Around 500 B.C.E., ancient Greek Pythagoras proposed that because the moon was round, the Earth must be as well. Somewhere around 70 years later, Anaxagoras discovered the cause of lunar and solar eclispes. He used the evidence of the Earth’s shadow on the moon to prove that the Earth is round. After judging constellations and their relations to the equator, in 350 B.C.E. Aristotle himself stated the the Earth is a sphere. In the next hundred years after him, Aristarchus and Eratosthenes both measured the size of the Earth. In more recent years, the are a plethora of images that prove the Earth is round. Despite this surplus of evidence, there is still a group of people who believe that the Earth is flat. And on the weekend of April 28, 200 of these people gathered in Britain for the first Flat Earth Convention.

“We’re seeing an explosion of interest in Flat Earth theories and increasing mistrust of governments.” said event organizer Gary Johnson. “…People are waking up.”

At the convention, which one could attend for £20 (plus £14.20 for parking), there were several keynote speakers who posited their strange, peculiar theories. One that has quickly gained notoriety comes from musician Darren Nesbit, who has been a Flat-Earther since 2014. His proposal answers a prominent question against the theory of a flat Earth: why do we not simply fall off the edge of the Earth?

Nesbit’s Pac-Man theory essentially posits that once an entity reaches the end of the Earth, it simply teleports to the other side, similar to what happens to Pac-Man when he reaches the end of the screen. This theory took him six months to question, research, and then accept. He claims there were two facts that made him believe his own theory.

“One is that, go look or stand outside – the world is clearly not moving!” Nesbit said.

The second factor perhaps makes more sense, he reasons. Nesbit questions why we seem to live on top of the Earth.

“Someone should be living on the side of the ball, with a perfectly vertical landscape, and people should be living underneath it, walking upside down,” said Nesbit.

The Pac-Man theory has been proposed before, but today it is commonly used to mock Flat-Earthers online. Despite opposition from the Internet, the Flat Earth Convention was still a success, and many people learned exciting new theories and ideas.