The relaxation of the definition of a "seal" was generally contemporaneous with reduced distinctions given to sealed contracts. This trend can be seen as a parallel of the courts' modern relaxation of their interpretation of the Statute of Frauds, and reflects the evolution of modern contract theory from classical contract theory. It has been noted that "about two-thirds of the states have now adopted statutory provisions depriving the seal of its binding effect," although several important jurisdictions, such as New Jersey and Wisconsin, have retained the concept.