Linguist Michael Erard, the author of Um. .. Slips, Stumbles, and Verbal Blunders, and What They Mean who we recently interviewed, graciously sent us this article, which he first wrote and published in the magazine Lingua Franca:

In a recent issue of the moderated e-mail list Linguist, Brown University anthropologist William O. Beeman addressed an odd phenomenon: Apparently, there is a different word for butterfly in every language, even though historical relationships and geographic contacts often suggest the words should be similar. Beeman called it "the butterfly problem."

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