Mistake (contract law) void. Traditionally, Caveat Emptor (let the buyer beware), and under Common Law Caveat Venditor (let the seller beware). A contract might be voidable from unilateral mistake for any of the following: A mutual mistake occurs when the parties to a contract are both mistaken about the same "material" fact within their contract. They are at cross-purposes. There is a meeting of the minds, but the parties are mistaken. Hence the contract is voidable. "Collateral" mistakes will not afford the right of rescission. A collateral mistake is one that 'does not go to the heart' of the contract. For a mutual
Caveat emptor recover only the damages that s/he would have suffered had s/he taken all feasible steps to minimize ("mitigate") his/her damages suffered. As a default rule, the perfect-tender rule may be "contracted around" in ways that specify or limit a buyer's remedies (and that accordingly reduce the market price that rational buyers are willing to pay for the goods). In many cases, the vendor will not provide a refund but will provide store credit. In the cases of software, movies, and other copyrighted material, many vendors will offer only a direct exchange for another copy of the same title, with the