"Max Tegmark leads us on an astonishing journey through past, present, and future, and through the physics, astronomy and mathematics that are the foundation of his work, most particularly his hypothesis that our physical reality is a mathematical structure and his theory of the ultimate multiverse. In a dazzling combination of both popular and ground-breaking science, he not only helps us grasp his often mind-boggling theories (his website gives a flavor of how they might boggle the mind), but he also shares with us some of the often surprising triumphs and disappointments that have shaped his life as a scientist. Fascinating from first to last--here is a book for the full science-reading spectrum"--

The remarkable story of a startling scientific idea that ignited a battle among the greatest minds of the twentieth century and profoundly influenced intellectual inquiry in fields ranging from physics to literary criticism, anthropology and journalism. In 1927, young German physicist Werner Heisenberg challenged centuries of scientific understanding when he introduced what came to be known as "the uncertainty principle." Heisenberg proved that in many physical measurements, you can obtain one bit of information only at the price of losing another. This proposition, undermining the cherished belief that science could reveal the physical world with limitless detail and precision, placed Heisenberg in direct opposition to the revered Albert Einstein. Niels Bohr, Heisenberg's mentor and Einstein's long-time friend, found himself caught between the two. Bohr understood that Heisenberg was correct, but he also recognized the vital necessity of gaining Einstein's support as the world faced the shocking implications of Heisenberg's principle.--From publisher description