Flat Earth? Firmament?
Sir, I assure you that the Earth is round… For the Space Lasers move separately from the stars fixed upon the Firmament! Clearly they are hung within the Crystal Spheres which revolve around us! And how could those divine Spheres revolve, were the Earth not round?
They also usually use some weasel words like “up to.” That way, if it doesn’t last the full 72 hours (which it won’t), they can claim that they stated “72 hours MAXIMUM” rather than just “72 hours.” It’s basically shifts the statement from “lasts three days” to “definitely won’t last four days.”