Enter as an interface discipline

The relevant Enter distinction is destructive classical readout versus quantum return. Measured quantum clock names are consumed; the complete returned interface contains a classical record and the unmeasured residual EnterI,EnterPhilosophy,En09.

We retain four separations:

1. a supplied mathematical evaluation is not acquisition of unknown continuum fields;

2. agreement of record probabilities is weaker than agreement of complete instruments;

3. preservation of an untouched reference is not generation of entanglement by gravity;

4. a protocol on a prescribed spacetime is not a derivation of that spacetime or its dynamics.

I-B supplies the prescribed-host clock and transport interpretation IB. It supplies neither the Einstein–Hilbert action nor the three trees.

The finite operational results below use explicitly specified Born instruments and prove their channel identities directly. No abbreviated reconstruction of Enter's characterization theorem is attempted.