What exactly is a pixel? Pixar co-founder Alvy Ray Smith discusses its math and history and his new book. Plus, farmer’s markets, once a cornerstone of in-person weekend outings, have gone digital. And Liquid Death Mountain Water is selling skateboards infused with Tony Hawk’s blood. For real.Sponsor:Upstart, upstart.com/kottkeLinks:A biography of the pixel, the elementary particle of pictures (Aeon)Hitting the Books: How our lying eyes trick the brain into seeing motion during movies (Engadget) The Real Story of Pixar (IEEE)Pixar cofounder Alvy Ray Smith's unseen 1990 presentation (Fast Company) Pixar cofounder Alvy Ray Smith on 'A Biography of the Pixel' (Fast Company) The farmers market is moving online (The Verge)Liquid Death Puts Tony Hawk’s Blood In Limited Edition Skateboards (Liquid Death, YouTube)Kottke.OrgJackson Bird on TwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.