Walker Caplan writes: “For all the fake news fearmongering of the last four years, we’re still very susceptible to myths presented as fact when they’re deployed with authority. February 7 saw the viral Facebook resurgence of a popular tweet from 2018 which claimed that in the event of a fire, all the oxygen is slurped out of Yale University’s Beinecke Rare Book and Manuscript Library to preserve the library’s collection of over 1 million rare books—killing all the people inside.”