6. Mistake
A party who enters a contract on the basis of a mistaken assumption as to background fact can realistically complain that he or she should not have to take the normal responsibility for his or her apparent consent. On the other hand, the objective test of intentions renders mistakes irrelevant to the validity of contracts except in certain exceptional circumstances. The chapter explores how contract law balances these competing norms. It addresses the following questions: (1) When can a claimant escape a contract on the ground of a unilateral mistake as to terms, the nature of the document, or the other party’s identity? (2) When can a contract be rectified to correct a common mistake in recording it? (3) When can a claimant escape a contract on the ground of his or her mistaken assumption about the relevant facts? (4) What is the justification for any relief? (5) Is the current law satisfactory, and if not, how might it be developed?