The lightbulb conspiracy is both real and everywhere

July 30, 2026

AI Summary

5 min read

In 1924, a group of the world's largest light bulb manufacturers met secretly in Geneva, Switzerland, just before Christmas. They called themselves the Phoebus cartel, after the Greek god of light. Their mission was not to innovate or improve their product, but to deliberately make it worse. They agreed to reduce the lifespan of the incandescent light bulb from roughly 2,500 hours down to exactly 1,000 hours. The goal was simple: if bulbs burned out faster, people would have to buy more of them. This is the origin story of planned obsolescence — and it is only half the picture.

The Eternal Bulb and the Secret Cartel

The story begins not in a corporate boardroom, but in 1990s Germany, with a group of friends obsessed with Thomas Pynchon's novel Gravity's Rainbow. In the book, there is a character named Byron the Bulb — a conscious, eternal light bulb hunted by a shadowy cartel of manufacturers called Phoebus. The friends, including a man named Marcus Krayewski, became fascinated by whether this fictional plot had any basis in reality. They discovered that it did.

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What you'll learn

1 (01:31) **Introduction: The Mystery of Planned Obsolescence** - Planet Money's Sally Helm brings a story about why products break, starting with a personal anecdote about a washer that died the day after the warranty expired.
2 (04:52) **Story One Begins: The Book Nerd Conspiracy** - In 1990s Germany, a group of friends obsesses over Thomas Pynchon's novel *Gravity's Rainbow*, which features a conspiracy about an eternal light bulb.
3 (08:00) **The Real Eternal Light Bulb** - Sally reveals that a light bulb in Livermore, California, has been burning continuously since 1901, proving that an eternal bulb is possible.
4 (09:36) **The Birth of the Phoebus Cartel** - Marcus searches archives and discovers the real "Phoebus cartel," a secret group of light bulb manufacturers who conspired in 1924.
5 (13:56) **The Conspiracy to Break the Light Bulb** - The cartel's core agreement was to intentionally reduce the lifespan of light bulbs from 2,000 hours down to 1,000 hours.
6 (17:20) **The End of the Cartel and Its Legacy** - The Phoebus cartel collapsed due to WWII and US antitrust action against General Electric, but its impact was lasting.
7 (19:46) **Story Two Begins: Alfred P. Sloan and a New Kind of Obsolescence** - Sally introduces a second, more insidious story about psychological obsolescence, which changes the villain from a cartel to the consumer's own desires.

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Show Notes

Over the next few episodes, we present Hidden Histories: stories that will make you rethink how the world works. First up, the conspiracy behind the lightbulb—and how it came to shape the entire consumer economy. If you ever wondered why your tech outdates so quickly or just plain fails, you can thank the lightbulb. (This episode originally aired in 2019.)

Guests:

Sally Helm, former NPR Planet Money correspondent

Markus Krajewski, author of The Great Lightbulb Conspiracy

Giles Slade, author of Made to Break: Technology and Obsolescence in America

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