B.3:4.4 - Aggregate only under an applicable model

B.3 supplies no default fold. When the assurance argument combines quantitative or ordered inputs, cite:

1. the exact result claims being combined;
2. the dependency or alternative-path structure;
3. the domain aggregation rule or model;
4. independence, dependence, calibration, and unit assumptions;
5. the calculation or ordered comparison;
6. the rival rule that would matter if an assumption fails.

Use min only when the cited domain rule makes the weakest input a lower bound or bottleneck for the exact quantity. It is not universally conservative. If no applicable aggregation rule is available, report the inputs separately and return a bounded, non-positive, or unresolved disposition. Do not manufacture one score to make the result look complete.

Several independent evidence lines may strengthen an argument only through the rule that states how their dependence and coverage are handled. Claim-scope intersection or union follows A.2.6 and the relevant evidence model; it is not an assurance arithmetic shortcut.