B.1:10 - Rationale
The practical force of B.1 is conservative. Whole-level reasoning is useful, but it must be grounded in accepted part-whole relations, constructional discipline, and use of the applicable direct patterns. This lets FPF speak across physical systems, epistemes, work occurrences, bounded contexts, disciplines, and collections without growing a new type for every composed expression.
Mathematical apparatus remains available. It becomes more useful after the governed object is known: graph for dependency representation, algebra for selected composition rules, tuple for slot relation expression, matrix or embedding for analysis, and C.29 when a mathematical lens is relied on for the current claim.