The Rest Is Science
The Rest Is Science

How Codes Were Used To Hack The Telegram Business

September 16, 2026

AI Summary

5 min read

The Telegram Codebook That Turned Tragedy Into Efficiency

In the 1900s, a tiny leather-bound book called the Universal Telegraphic Phrase Book let ordinary people compress entire messages into single Latin words. If you wanted to ask "What is the length of this fabric?" you simply wrote Melania followed by the noun. If you needed to announce a birth with complications, one word like Amygdala meant "gave birth today, baby dead, mother weak." The book worked both ways—sender and recipient each owned a copy, and both could look up words alphabetically to encode or decode. It was a system built entirely around the economics of the telegram, where every word cost money and brevity was survival.

The Tragedy That Gave Us Instant Communication

Continue reading the full summary in the app — free to try.

Read Full Summary →

Free • No credit card required

What you'll learn

  • 1 (01:39) **Michael's Vintage Code Book** - Michael shows Hannah a small leather-bound "Universal Telegraphic Phrase Book" from 1900, a code book for everyday people
  • 2 (09:20) **Dark and Funny Code Examples** - Michael flips through the book to find specific codes for births, deaths, and weddings
  • 3 (12:06) **The Collect Call Baby Announcement Trick** - Hannah recalls a US commercial where a man used a collect call to announce his baby's birth for free
  • 4 (14:19) **Morse's Tragic Inspiration for the Telegram** - Samuel Morse's personal tragedy led him to invent the telegraph
  • 5 (16:02) **How the Telegraph Changed Human Experience** - Michael recommends Neil Postman's "Amusing Ourselves to Death" about how instant communication reshaped society
  • 6 (18:39) **Charles Babbage and the Computer That Could Have Been** - Hannah discusses how close the 1800s came to inventing the computer
  • 7 (20:15) **Arthur C. Clarke's Mixed Prediction** - Michael shares a favorite clip of the futurist's surprisingly accurate and hilariously wrong vision

+ Full timestamped outline available in the app

Show Notes

What if a single strange word could save you a fortune?


In this episode Michael opens up a Victorian telegram code book and explores how users compressed long messages into brief coded words to outwit the per word charge of the telegraph system.


Coded language turned everyday phrases about everyday events into something that looked like nonsense to outsiders, and why that secrecy was often a side effect of economy rather than espionage, and how operators learned to live inside this clipped new dialect of distance and delay.


-------------------


For more information about Cancer Research UK, their research, breakthroughs and how you can support them, visit https://cancerresearchuk.org/restisscience


Cancer Research UK is a registered charity in England and Wales (1089464), Scotland (SC041666), the Isle of Man (1103) and Jersey (247). A company limited by guarantee. Registered company in England and Wales (4325234) and the Isle of Man (5713F). Registered address: 2 Redman Place, London, E20 1JQ.


-------------------


Find The Rest Is Science all over the internet by ⁠⁠clicking here.⁠⁠


-------------------


Video Producer: Adam Thornton + Oli Oakley + Jack Meek

Animator: Sam Benson

Video & Social: Bex Tyrrell

Assistant Producer: Lucy Lipscombe

Producer: Simona Rata

Senior Producer: Lauren Armstrong-Carter

Chief Digital Officer: Samuel Oakley

Exec Producer: Neil Fearn

Learn more about your ad choices. Visit podcastchoices.com/adchoices

The Rest Is Science

More from this podcast

The Rest Is Science →