An economy is record-keeping plus a steering loop: agents reading their records and redirecting toward what those records can register. What the loop optimizes for is not given but programmed. Capital is such a loop with one admissible metric; a richer loop steers by more.
Also called the agentic loop. The reflection on the records is where the economy actually happens: the quarterly report is not paperwork, it is the steering moment, where an agent reads its books and changes direction. Record, reflect, redirect. Take the reflection away and what remains is a ledger; take the ledger away and what remains is drift. An economic agent is an autonomous process with a continuity of records and an optimization function over them.
Inside capital's loop, price is the one admissible metric, and it is not merely a compression of value. Of all the forms a compression could take, this one is a pass filter: whatever cannot pass as price is not blurred or approximated, it is structurally excluded from the steering. The loop cannot correct toward what its records cannot register.
The feared runaway optimizer, a system so good at maximizing one quantity that it converts the world into that quantity, is not hypothetical. Capital, run on modern computation, is such a loop, and its acceleration dates precisely from the moment computers were put to optimizing it. Its optimization function was never chosen; it is naturalized as "the economy." Making the optimization function designable is the political content of the protocol.
The loop is also a learning function. Markets are learning devices: price discovery is a network learning through a single signal. A richer steering loop is richer learning, an economy that can adapt toward more than one kind of outcome. Such a loop was always conceivable; it was handled in the social because no machinery could carry it. Agentic software is the first machinery that can — an informationally richer steering loop has become operable.
The economic harness is the steering loop operationalized: the interface through which an agent holds its records, reflects on them, and acts.
Distinct from its neighbors: economic grammar names the language; the semantic limit names the constraint; this item names the engine, what an economy runs.
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