In March 2020, the membership of the European Law Institute adopted the ELI Model Rules on Online Platforms. These Model Rules are the result of a 5-year project during which a multinational working group drafted and developed rules for the relationship between online platforms and their users....

This article explores some of the core concepts that underlie contract law. It rejects the feasibility of a uniform theory of contract law including a critique of the economic analysis of contract law. The importance of efficient contract rules and efficient contracts is not disputed, but...