THE WORD WENT OUT TO some of the world's leading scientists and thinkers: just what is your dangerous idea? Ideas defined as dangerous not because they're assumed to be false but because they might be true. Spanning multi-disciplinary topics including biology, genetics, neuroscience, psychology and physics, this volume is full of provocative, speculative and plain mischievous arguments. Ask people to play devil's advocate and the results are fascinating. Maybe we're all marionettes dancing on genetic strings; maybe we have no souls or perhaps we may all even "house homicidal circuits within our brains". One bright spark even posits that the very notion of disseminating dangerous ideas (even in a safe, playful medium such as this one) is itself dangerous because ideas can be powerful forces. ...