A razor with two cartridges can cost less than a pack of four replacement cartridges. The handle is built to last for years. The blades are designed to be thrown away.

The next time you buy replacement blades, you'll notice the cheap razor beside them — and question who really invented that pricing strategy.

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IN THIS EPISODE

— Why Gillette charged premium prices for razors when its patents gave it the power to sell them cheaply

— How forgotten competitors pioneered the inexpensive razor strategy

— How a business model became one of the most widely repeated myths in economic history

THE NUMBER

$5 — the price of a Gillette razor set with twelve blades in 1904, roughly one-third of an American industrial worker's weekly wage.

SOURCES

Randal C. Picker — The Razors-and-Blades Myth(s), University of Chicago Law Review, 2011

Russell B. Adams — King C. Gillette: The Man and His Wonderful Shaving Device, 1978

TIME — Business: Bogus Blades, September 12, 1927

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Narration in this episode is AI-assisted.

Research, writing and editorial judgment are human.

Invisible Economics — The Systems Behind Everyday Life

A pack of chewing gum crosses a supermarket scanner in Ohio. The register shows sixty-seven cents. It looks like a faster way to ring up a sale, but that small beep created something much larger.

The next time you hear a scanner beep at checkout, you'll notice that the cashier isn't the only one learning what was bought.

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IN THIS EPISODE

— How the barcode escaped a decades-long technology deadlock

— Why manufacturers agreed to print a code that primarily helped retailers

— How the checkout scanner turned shopping into a stream of data

THE NUMBER

More than 10 billion barcode scans every day — GS1 estimate

SOURCES

Emek Basker & Timothy Simcoe — research on UPC adoption and innovation

Paul Messinger & Chakravarthi Narasimhan — Marketing Science, 1995

GS1 — history and global use of the barcode

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Narration in this episode is AI-assisted.

Research, writing and editorial judgment are human.

Invisible Economics — The Systems Behind Everyday Life

A city repairs a pothole overnight. By morning, hundreds of cars and one heavy truck have crossed the fresh asphalt. They may travel the same road, but they do not leave the same mark.

The next time you drive over a fresh patch of asphalt, you'll notice the heavy vehicles around you — and know that road damage and the bill for repairing it follow very different rules.

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IN THIS EPISODE

— Why pavement damage rises dramatically as axle weight increases

— Why the vehicles causing the most wear do not necessarily pay for it

— How taxes, truck design and road funding separate the cost from the cause

THE NUMBER

Nearly 10,000 cars — the estimated pavement impact of one fully loaded five-axle truck in a 1979 U.S. congressional analysis

SOURCES

AASHO Road Test — 1958–1960

U.S. Federal Highway Cost Allocation Study — 1997

U.S. Congressional highway cost analysis — 1979

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Narration in this episode is AI-assisted.

Research, writing and editorial judgment are human.

Invisible Economics — The Systems Behind Everyday Life