Alan Burdick, writing at The New Yorker:

If you are only just waking up to the twenty-first century, you should know that, according to a growing number of people, much of what you’ve been taught about our planet is a lie: Earth really is flat. We know this because dozens, if not hundreds, of YouTube videos describe the coverup. We’ve listened to podcasts—Flat Earth Conspiracy, The Flat Earth Podcast—that parse the minutiae of various flat-Earth models, and the very wonkiness of the discussion indicates that the over-all theory is as sound and valid as any other scientific theory. We know because on a clear, cool day it is sometimes possible, from southwestern Michigan, to see the Chicago skyline, more than fifty miles away—an impossibility were Earth actually curved.

Maybe, and stay with me here, the internet was a massive mistake.