Why Did the Can Opener Take Almost Half a Century?

For almost half a century, food travelled the world sealed in metal - with no tool made to open it. — Chapters 0:00 Almost Half a Century 1:09 The Trap of Looking Backward — Simple in Parts, Complicated in Context 2:51 The First Problem Was Not Opening — A Can Built Like Armor 4:27 The Hammer Was Competition — and the Customer Had to Appear 6:10 Materials Change the Possible — Complements Set the Clock 7:39 Ezra Warner's Instrument — and the Shopkeeper Who Was Part of the Machine 9:15 The Rotating Idea — and the Hand That Had to Learn the Object 10:50 Standards Make Tools Feel Natural — and Adoption Is Another Invention 12:28 Two Counter-Examples — The Suitcase That Waited for Wheels, and the Wheelbarrow 14:05 Many at Once — and Why the Date Is Not the Origin 16:27 The Problem Must Become Visible — Need Does Not Automatically Produce Design 17:54 The Answer — Assembled From Previous Complexity 19:52 Final Reframe — Obvious Only From Here — A new episode every week. This channel takes one ordinary thing and follows it until it stops being ordinary. If you spotted an error, say so in the comments. Corrections get pinned. — Credits Footage: United States Patent Office, 1858 and 1870 (Public Domain) · Daderot, Wikimedia Commons (Public Domain) Baikal Railway, Railway track, Russia (cropped): Vyacheslav Argenberg, via Wikimedia Commons, CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · https://commons.wikimedia.org/wiki/File:Baikal_Railway,_Railway_track,_Russia.jpg This ol' can (cropped): waferboard, via Wikimedia Commons, CC BY 2.0 (https://creativecommons.org/licenses/by/2.0/) · https://commons.wikimedia.org/wiki/File:This_ol%27_can_(6806870779).jpg Images (cropped): William Bradford, "An Arctic Summer: Boring Through the Pack in Melville Bay (1871)"; Jean-François Millet, "Peasant Pushing A Wheelbarrow (1855)": The Metropolitan Museum of Art, Open Access (CC0) · Kitchen-Modern-Can-Opener (Evan-Amos): Wikimedia Commons (Public Domain) ·