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How Codes Were Used To Hack The Telegram Business

Sep 16, 2026 · 57m

Summary

Hannah Fry and Michael Stevens explore a 1900s telegraph codebook that used Latin words to abbreviate messages for cost, discussing the history of communication from Morse to modern texting. They also answer listener questions about why we rarely dream about smartphones, the physics behind water swirling down drains, and the specific material properties required to survive a fall from the world's tallest building.

Topics discussed

Introduction and Field Notes format Teaser: Measuring tissue softness Introducing the Universal Telegraphic Phrasebook Ad break and transition to telegram history How telegrams worked and the cost of words Decoding Latin phrases for common topics Dark codes for birth and death notifications Permutations for twins and operator errors Foretelling codes and reverse charge calls Modern abbreviations vs. historical codes Samuel Morse's personal tragedy and invention The impact of instant global communication The first telegram and keepsake value Charles Babbage and Ada Lovelace's vision Predicting the future of mobile communication Skewmorphs and the origin of upper/lowercase Ad break and transition to listener questions Why we rarely dream about our phones Dreams about possessions and virtual reality Recurring dreams of failure and relief Physics of water swirling in drains Fluid dynamics of sand and granular materials CAR T-cell therapy as a car chase Cancer cell disguise and dual-targeting Off-the-shelf CAR T-cell therapies Surviving a fall from the tallest building Measuring softness and impact force Hard hats and stopping distance physics Crash barriers and crumple zones Skydiving into nets and energy absorption Terminal velocity and animal size Throwing ants off buildings experiment Outro and submission of new questions Promotion for Bear Hunt audio drama
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