One of the better layman's books on the subject, but did not explain string theory, as it seemed to lead up to. (I know, "Beyond Einstein II"...) This seems the common approach in this tight genre. Some explanations were dead-on, while others missed the mark. All these books seem to lack the will to judge the merits of the Copenhagen Canon, which today seems as "untenable" as Einstein's "localism". I could not help challenging several key assumptions leading to the "inevitable" conclusions in mainstream theory, assumptions which were stated almost as facts in my own college quantum courses. It is true; those working on the theories are so caught up in the math, they are not equipped to think visually, as did Einstein. Now that we've gone beyond dear Albert, isn't it time we go back and pay him a visit?