Track B · MarketsNode B2
Price as information
Layer 1 · Pocket
~ 30s readThe thirty-second answer
What is this?
A price compresses millions of distributed decisions into one number. That's its magic. It is also why prices fail when the underlying decisions are bad — bubbles, panics, externalities.
Why should I care?
Knowing what prices are good at — and what they're bad at — is the difference between trusting and over-trusting the market signal. Most market failures are misuses of a useful tool.
What prices aggregate well · and poorly
- Private preferences (do I want it?)
- well
- Local supply conditions
- well
- Externalities (effect on others)
- poorly
- Long-tail risk (rare disasters)
- poorly