Maybe you could have used this for the holidays, when your family gatherings were wracked by arguments over whether the Earth is flat or not, but Minute Physics‘ latest video is a handy two-minute rundown of the “Top 10 Reasons Why We Know the Earth is Round.” The number one reason, which I won’t spoil but which should be obvious, should also be conclusive, but in case your dad or weird uncle listens to some obscure paranoid talk show host who insists that we don’t have PROOF of the obvious, well, the other nine ought to cover that.
(Nobody actually thinks the world is flat, do they? I mean, not even the Flat Earth Society, right? Please?)
(The best explanation for why the world MIGHT be flat, of course, is in the lyrics of the 1991 country hit “Small Town Saturday Night” by Hal Ketchum: Bobby told Lucy “The world ain’t round/Drops off sharp at the edge of town/Lucy, you know the world must be flat/’cause when people leave town, they never come back”/They go ninety miles an hour to the city limits sign/Put the pedal to the metal ‘fore they change their mind…)
Gratuitous music! Hey, it’s still the holidays.
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I love minute physics, it is excellent for showing and explaining things to people who may have the “eww, math” or “eww science” mentality.