SYSE.51:4.3 - Preserve completion and stop on useful sufficiency

Estimate the remaining cost of required completion under the actual current conditions, with enough allowance for its uncertainty. Before an optional move, compare its bounded cost and expected decision value with the remaining means after that reserve. Reject or shorten an optional move that would defeat the required completion path.

Stop further reasoning when the supported result is sufficient for the receiving decision, when no affordable move could resolve the consequential gap, or when changed conditions defeat the intended task. Stopping that reasoning may lead to execution, a needed observation or an honest partial return; it need not mean that the whole task is complete.

Implement the selected rule in SYSE.47 as a usable instruction or runtime control, and keep enforceable hard limits in SYSE.40. A written cue can support a person’s allocation; it is not a software-enforced bound on mental activity. A learned preference for cheap trajectories supplies no hard-cap guarantee. If a tool’s cost is unbounded or completion uncertainty consumes the reserve, obtain a bounded alternative or return the feasibility gap rather than assuming the reserve will suffice.