What Is Your Dangerous Idea?: Today's Leading Thinkers on the Unthinkable is a book edited by John Brockman, which deals with "dangerous" ideas, or ideas that some people would react to in ways that suggest a disruption of morality and ethics. Scientists, philosophers, artists, and various other groups of people have written in to the online salon called the Edge, where thinkers in several areas post and discuss their ideas. This collection of responses forms the entirety of the book (possibly with some excluded because of the great number of posts). The basic concept behind the book is "to gather a hundred of the most brilliant minds in the world in a room, lock them in, and have them ask each other the questions they were asking themselves".