price system
Prices are how subjective value becomes information other people can act on. Every price compresses how badly someone wants something, relative to everything else it could be used for — scarcity, effort, substitutes, all folded into one number.
No single person, or committee, needs to know any of that underlying detail. A carpenter doesn’t need to know why lumber got scarcer this month — he just sees the price rise and economizes accordingly. This is what solves the knowledge problem: the price system spreads the calculation across every participant in the market instead of routing it through one throughput-limited authority.
Lumber gets scarce -> price rises
Carpenter sees the price, not the reason
Carpenter substitutes, conserves, or pays up
No central authority had to know whyRemove market prices — as Socialism does by abolishing private ownership of capital goods — and this signal disappears with them. That’s the mechanism behind the economic calculation problem: without prices, there’s nothing left to economize with.