Journalist Kelly Weill, writing for the Daily Beast, went to a flat-earth convention:
Thousands of years after ancient Greeks began referencing Earth as a sphere in mathematical proofs, people who believe in a flat Earth have become a movement. They’ve found their voice in the disinformation age, fueled by YouTube videos. For true believers, it’s more than just a conspiracy theory. It’s whole world view, a level plane onto which hucksters, trolls, and Christian fundamentalists can insert their own ideologies.
In an age of rising conspiracy theories—voter fraud, QAnon, anti-vaxxers, chemtrails—Flat Earth might be the most foundational conspiracy theory of them all.
Religious conspiracy (some people I speak to at the conference accuse the Freemasons, not the Jews of covering up Flat Earth) and political uncertainty go hand in hand. Embittered by Germany’s loss in World War I, fascists falsely accused the country’s Jews of “stabbing Germany in the back” during the war. The conspiracy theory contributed to the Holocaust under Nazi rule. The ongoing genocide of the Rohingya, a Muslim minority in Myanmar, during a period of political strife has been fueled by a dramatic increase in anti-Rohingya hate speech and conspiracy on Facebook. In a period of political unrest in America, anti-Semitic conspiracy theories and subsequent murders of Jews are on the rise.
When the entire world feels uncertain, it’s no wonder people look for an easy culprit. Flat Earthers say the planet is a stationary disk that does not rotate or orbit the sun. But I speak to enough to suspect they still feel off-balance in the world.
I probably don't have to convince any regular readers of this blog of the (mostly) spherical shape of our home. But I have seen proof with my own eyes, and posted it here previously:
That is the shadow of the earth stretching straight out into space as the earth itself curves away under it. You, too, can see this any time you fly across the terminator, as thousands of people do daily.
Meanwhile, with a modern-day Know-Nothing party in control of our government, it seems almost natural that so many people would reject the only possible explanation for so many readily-observable phenomena in favor of something so insane it took a fantasy writer to describe it comprehensively. All hail the Great A'Tuin!