Since 2015 there has been a spectacular boom in a centuries-old delusion: that the earth is flat. Weill draws a direct line from today's conspiratorial moment, brimming not just with Flat Earthers but also anti-vaxxers and QAnon followers, back to the early days of Flat Earth theory in the 1830s. When faced with a complicated world out of our control, humans have always sought patterns to explain the inexplicable. Powered by Facebook and YouTube algorithms, the Flat Earth movement is growing. Meet historical figures who first popularized the theory, as well as the many modern-day Flat Earthers Weill herself got to know. She explores how we arrived at this moment of polarized realities--and explains what needs to happen so that we might all return to the same spinning globe. -- Adapted from front book jacket flap.