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1. XKCD Bot (xkcd@mastodon.xyz)'s status on Friday, 05-Jul-2019 18:00:03 UTC XKCD Bot

   The Antikythera mechanism had a whole set of gears specifically to track the cyclic popularity of skinny jeans and low-rise waists.
   https://xkcd.com/2172/

   • Aurochs repeated this.