Contracts Deep Dive: Consideration, Modification, Promissory Estoppel, and Restitution

⚖️ Hear the rules. Follow the stories. Connect the dots.⚖️Five companion resources from The Law School of America.🎬 THREE ILLUSTRATED GUIDES👉 The Last Edition — Follow the case.👉 The Price of a Promise — Trace the broken bargains.👉 When the Lights Return — Step into the countdown.📚 TWO TEXT GUIDES📖 The Contracts Book — Deepen your understanding.🎯 The Summary Guide — Sharpen your review.See it. Study it. Review it.Explore all three stories, build your foundation with the book, then pull it together with the summary guide.🎧 EPISODE SUMMARY 🎧To determine if a promise is legally enforceable, students must navigate the distinct theories of bargain protection, reliance protection, and restitutionary protection.Consideration requires a bargained-for exchange of legal detriment. A legal detriment involves doing something one is not legally obligated to do or refraining from doing something one has a right to do. Courts generally do not question the adequacy of consideration, but nominal or sham consideration is void. Past consideration and moral obligation do not satisfy the requirement of a present exchange, and conditional gifts lack the necessary mutual inducement.Under the common law preexisting duty rule, a promise to perform an act one is already legally bound to do is not valid consideration. Consequently, common law contract modifications require new consideration. Conversely, Article 2 of the Uniform Commercial Code abolishes the preexisting duty rule, allowing good-faith modifications of contracts for the sale of goods without new consideration. The settlement of a disputed claim serves as consideration, provided the claim is given up in good faith, and unliquidated debts can be resolved through an accord and satisfaction.When consideration is absent, a promise may still be enforced under the doctrine of promissory estoppel. Promissory estoppel is a separate reliance-based theory requiring a clear promise, foreseeable reliance, actual detrimental reliance, and the necessity of enforcement to prevent injustice.Finally, when there is no enforceable promise at all, a party may seek restitution to prevent unjust enrichment. Restitution applies when a measurable benefit is conferred upon a defendant who retains it under circumstances where it would be profoundly unfair to do so without compensation.By mastering the distinctions between bargained-for exchanges, detrimental reliance, and unjust enrichment, the student can accurately diagnose any contract formation problem.ℹ️ INFORMATION, PRIVACY POLICY & TERMS OF USE ℹ️The Podcast and Website PurposeThe Law School Podcast and 1L Study Aide webpage supplements law-school and Bar Exam study with strategies, condensed rules, quizzes, and flashcards.Educational DisclaimerContent is for educational and informational purposes only. It is not legal advice, creates no attorney-client relationship, and does not guarantee law-school or Bar Exam success.Privacy PolicyNo account or login is required.This webpage uses no forms or analytics to collect personal information.Quiz and flashcard activity stays in your browser and may clear when local site data is removed.Terms of UseBy using this webpage, you agree to use its content only for lawful, personal, noncommercial educational purposes. It supplements—not replaces—courses, textbooks, official materials, or qualified instruction.