The Americans with Disabilities Act recognizes that people with disabilities are often prevented from leading productive and satisfying lives because social, school and work environments are often thoughtlessly and unnecessarily designed with only people with the standard set of abilities in mind. In many cases “reasonable accommodation” to the ways people with disabilities need to do things is required. What is reasonable? Elevators in schools? Probably. How about elevators in the Grand Canyon? What is a disability? Blindness? Certainly. How about obesity? Where do we draw lines, and on what principles? John and Ken test their abilities with Anita Silvers from San Francisco State University, author of Disability, Difference, Discrimination: Perspectives on Justice in Bioethics and Public Policy.