A rule and its implementation

A fictional teaching collection sets two invented documents in a premodern town. A charter says that market stalls should use a specified public measure. A later dispute records complaints that several traders used inconsistent vessels. Neither document gives a complete count of transactions or states the final decision in the dispute. One learner concludes that the charter proves universal compliance; another says any complaint proves that no trader ever obeyed the rule. The class is asked to compare the kind of statement each document makes and the scale of conclusion it permits. The documents do not reproduce an actual medieval charter or establish a current commercial standard, and students should not supply a missing enforcement outcome from imagination.