C.40.JF:10 - Rationale

Reachability depends on conditions holding together, not merely being individually conceivable. Binding the claim first makes both rejection and retention more precise: evidence can defeat one combination without defeating every use of the contribution.

Separating the qualification of each premise from the joint test also makes work reusable. A current access, capability, or support result can serve several candidates, while each candidate still needs its own compatible combination and transition basis.