Prices Are Signals (and Politicians Keep Shooting the Messenger)
Back in November, I outlined eight economic insights that matter for policy. I promised to explain them one by one. It’s taken me months to get to that—not because I forgot, but because this concept is a central part of the book I’m working on. I wanted to make sure I had all the parts lined up, all 5,000 words of them.
This is the most central insight from economics, and every other one depends on understanding it:
A price is a signal wrapped in an incentive. Prices aren’t just good or bad numbers—they tell us what’s scarce while creating pressure for change.
When most people see a high price, they see a problem (unless the “price” is their wage, and then everyone is happy with the high price). Politicians get elected by promising to “do something” about high prices. But economists see prices as something different: a piece of information that’s telling us something important about the world, paired with a built-in mechanism to address the underlying issue.
Prices are the nervous system of the economy—they transmit vital information throughout the entire economic body without any central coordination. Every day, billions of economic actors make decisions based on prices. Should I buy this house? Should we manufacture more refrigerators? Should I become a software engineer? Prices guide these countless choices, while providing the decentralized coordination that makes complex modern economies possible.
What makes this system remarkable is that it requires no mastermind, no central planner calculating how many toothbrushes to produce or avocados to ship. Instead, prices emerge naturally from the interactions of buyers and sellers, each pursuing their own interests yet collectively generating an intricate web of information and response that no single mind could conceive.