PHY.6:9 - Consequences
The construction makes a physical account easier to use and divide among contributors. A specialist can supply a response law or preparation condition while another derives or computes its consequence. The connection states what each contribution must mean for the combined result.
Balances expose some construction errors cheaply. They leave many response questions open, so a balanced model can still be physically inadequate. Complex constraints, unresolved responses or changing regimes can require more physical work before the desired prediction becomes available. A conditional result or a narrower consequence can remain useful during that work.