B.1.3:5.3 - Contrast (didactic)

Aspect	Knowledge composition (B.1.3:4)	System aggregation decisions (B.1.2:4)
What is combined?	Claims, models, datasets and arguments, with their provenance and semantic relations	Established component, material-portion and assembly facts for one engineering decision; each whole-characteristic claim uses its applicable aggregation rule
Conservatism	Support roles, dependence, and mapping limits under the named B.3 model; no invented aggregate	WLNK for a quantity whose physical model justifies a weakest-part bound
Fit	Semantic mappings and their calibration evidence, with a separately warranted receiving use	Interfaces, crossings and compatibility choices under B.1.2:4.3 and their direct relation rules
Order/time	Argument order; C.2.1 episteme identities and edition relations; A.14 proper temporal restrictions; B.1.4 aggregation of recovered order or temporal relations	A.15.1 for assembly Work and its temporal parts; A.14 for proper phases of enduring carriers; B.1.4 for aggregation of recovered order or temporal relations
Work/cost	Resources spent in synthesis, compilation or validation Work, aggregated under B.1.6	Resources spent in assembly or operation Work, aggregated under B.1.6