The document discusses the concept of universal design. It begins by showing how universal design is often thought of in terms of accessibility for disabled individuals. However, it argues that universal design should aim to make products and environments usable by everyone regardless of age, ability, or other status. It discusses how the key aspects of universal design are that designs should be aesthetic and usable by all. The document then discusses various design approaches and emphasizes that user-centered design is important for universal design as it focuses on designing around user needs rather than forcing users to change.