Potential usefulness and precise novelty

The positive outcome is a same-document chain from classical geometric realization to finite accepted descriptions, guarded code flow, complete recorded channels, and actual regular causal routes.

It is potentially useful as a benchmark for a later proposal that claims more. Such a proposal can be asked to supply, on the same interfaces:

• a source-acquisition instrument rather than a promised token;

• a consistent dynamical host change rather than catalogue replacement;

• a field representation rather than a finite table;

• a physical embedding of every controller dependency rather than a computational support diagram.

Passing one item does not pass the others.

The geometry, matching philosophy, and guarded history have explicit predecessors in series VIII. The general instrument, channel-distance, recovery, and reversible-computation principles are also established subjects DaviesLewis,Watrous,KnillLaflamme,Bennett. No priority claim for those general principles is made.