Pretty much everyone feels like an idiot when confronted with string theory — and that includes physicists. Author George Musser writes: "String theory is the leading, if controversial, candidate for a fully unified theory of physics. Despite what the title says, this book surveys not only this one theory but a broad range of ideas for a unified theory, picks a way through the minefield of claims and counterclaims for them, describes what such a theory would mean not just for physics but for the wider world, and explains how it might be tested experimentally."