Mr. Tenner and Mr. Fukuyama talked about the benefits, pitfalls, and consequences of advances in biotechnology. Mr. Tenner is the author of Our Own Devices: The Past and Future of Body Technology, published by Knopf. Mr. Fukuyama is the author of Our Posthuman Future: Consequences of the Biotechnology Revolution, published by Picador USA. Following prepared remarks, the panelists responded to questions from the audience.