I feel the same way: "These people must be joking", but I worry that I'm falling into a Colbert Study [1] trap where my underlying assumption that the earth is

I feel the same way: "These people must be joking", but I worry that I'm falling into a Colbert Study [1] trap where my underlying assumption that the earth is a sphere lets me make the easier rationalization that "these people must be joking" than the much harder realization that some significant chunk of humanity has deeply held beliefs (and a system for establishing those beliefs) that is alien to my own. 1 - http://journals.sagepub.com/doi/abs/10.1177/1940161208330904 http://journals.sagepub.com/doi/abs/10.1177/1940161208330904