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Do Backflow Preventers make the Internets a Nicer Place? Discuss.

Originally shared by Susan Jahn
https://twitter.com/xkcdComic/status/1001869720465780736?s=09

Comments

  1. Gaffer VenarMay 30, 2018 at 6:16 PM

    Backflow Preventers make a nicer place of almost everything they come into contact with. Nobody really likes backflow.

    Tidal bores are different. That's rhythmic, cyclic change of flow.

    ReplyDelete

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