 Thus variable hypotheticals “form the system with which the speaker meets the future” in that “we trust [a conjunction of their instances] to guide us in a new instance” exactly because the conjunction is evidence for the variable hypothetical. Simplicity may still play a role, but not as constitutive of laws (as in the earlier, Best System account), rather only as epistemic justification for adopting a rule of judgment (1929b, [FM] 242). This allows again for the non-arbitrariness if not uniqueness of laws. Unknown laws are those rules of judgment whose adoption is justified by unknown facts (1929b, [FM] 243–45).