What Is Held

A ground state is a tug-of-war settled at the rope's middle: the couplings sit where the balance rests. The proton is that state — three couplings in the minimal orientation, nothing extra, nothing held open.

The neutron is not the proton plus a thing. Same inventory: three couplings, nothing added. One of the three sits in the other orientation. What the neutron holds is therefore not an object but a distinction — the gap between where one coupling sits and where the balance would put it. A window held open against the wind that wants it shut.

That is the whole scope, and it is definitional: the cost is defined on flips. No flip, no cost. The proton is excluded not by a check but by the definition — there is no distinction to hold when you are the ground.

The form of the correction is the fingerprint of this scope. A new thing would add a term. A held distinction discounts the difference itself — you multiply the ideal gap by the cost of keeping it open, and you touch nothing else. The old formula's omission was exactly this: it priced the flip as if holding it were free, and nothing in the ledger holds for free.