@atlasofwhydoco: Why split a wooden receipt in two? In England’s Exchequer, notches recorded an amount on one stick. Splitting it lengthways through the cuts made two records: the longer stock and the shorter foil. Both kept every notch, so each recorded the whole amount. The holders could later bring their pieces together to compare the records. In our hypothetical example, an extra notch on one piece has no partner on the other. The pieces can still sit together while their records disagree. Matching checks the record. It does not pay a debt or make forgery impossible. Original schematic illustration, not a reconstruction of a particular museum object or a calibrated demonstration of woodworking. Geometry, movement and timing are simplified for explanation. Sources and further reading: Bank of England Museum, Payments through time: https://www.bankofengland.co.uk/museum/whats-on/exhibitions/325-years-exhibition/payments-through-time London Museum, tally stick 74.431: https://www.londonmuseum.org.uk/collections/v/object-71971/tally-stick/ Cambridge University Library Special Collections, Sian Collins (2017): https://specialcollections-blog.lib.cam.ac.uk/?p=15494 Science Museum Group, Exchequer tally (1812): https://collection.sciencemuseumgroup.org.uk/objects/co60106/exechequer-tally-1812 Original AI-assisted illustration and animation: Claude, drawn in code. Synthetic narration: ElevenLabs Eleven v4, saved Brad documentary voice. Music: “Lamplit Inquiry”, an owned original made with Suno v6 on a Pro plan, downloaded 5 October 2026; excerpt from 40–96.5 seconds. Typeface: Inter, SIL Open Font License 1.1. Atlas of Why | An Everwood Multimedia channel #AtlasOfWhy #History #HowItWorks

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Monday 26 October 2026 00:14:01 GMT