As usual, Greg Egan plunges us into a world full of expectations that scientists can hardly leave the reader indifferent: A History "Theory Of Everything", blending physics and information theory, in a inbriquée scenario that is reminiscent of "Grand Junction" Dantec. In short, if you wait a pamphlet on the superstring theory, do not buy this book, by cons, if you like high-flying intrigues Hard SF, order it now!