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Contracts Deep Dive: Consideration, Modification, Promissory Estoppel, and Restitution
Description
⚖️ 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.
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