Yale law professor Ian Ayres covers the Statute of Frauds within his American Contract Law course, part of a series originally built for his Coursera offering. The lecture explains which contracts must be in writing to be enforceable, focusing on contracts for the sale of goods and the consequences when parties fail to comply with the writing requirement. Ayres also addresses how estoppel can interact with the Statute of Frauds, allowing a party to enforce an oral agreement despite the usual writing requirement under certain circumstances. The lecture sits within the broader unit on consideration and its substitutes, connecting the formal requirements of contract formation to the doctrines students have already studied. Delivered in a straightforward classroom style typical of Ayres' contract law series, it is aimed at students working through the mechanics of enforceability rather than general audiences.