This is the first book-length presentation and defense of a new theory of human and machine cognition, according to which human persons are superminds. Superminds are capable of processing information not only at and below the level of Turing machines (standard computers), but above that level (the "Turing Limit"), as information processing devices that have not yet been (and perhaps can never be) built, but have been mathematically specified; these devices are known as super-Turing machines or hypercomputers. Superminds, as explained herein, also have properties no machine, whether above or below the Turing Limit, can have. The present book is the third and pivotal volume in Bringsjord's supermind quartet; the first two books were What Robots Can and Can't Be (Kluwer) and AI and Literary Creativity (Lawrence Erlbaum). The final chapter of this book offers eight prescriptions for the concrete practice of AI and cognitive science in light of the fact that we are superminds.

A dominant feature of our ordinary experience of the world is a sense of irreversible change: things lose form, people grow old, energy dissipates. On the other hand, a major conceptual scheme we use to describe the natural world, molecular dynamics, has reversibility at its core. The need to harmonize conceptual schemes and experience leads to several questions, one of which is the focus of this book. How does irreversibility at the macroscopic level emerge from the reversibility that prevails at the molecular level? Attempts to explain the emergence have emphasized probability, and assigned different probabilities to the forward and reversed directions of processes so that one direction is far more probable than the other. The conclu sion is promising, but the reasons for it have been obscure. In many cases the aim has been to find an explana tion in the nature of probability itself. Reactions to that have been divided: some think the aim is justified while others think it is absurd."

A dominant feature of our ordinary experience of the world is a sense of irreversible change: things lose form, people grow old, energy dissipates. On the other hand, a major conceptual scheme we use to describe the natural world, molecular dynamics, has reversibility at its core. The need to harmonize conceptual schemes and experience leads to several questions, one of which is the focus of this book. How does irreversibility at the macroscopic level emerge from the reversibility that prevails at the molecular level? Attempts to explain the emergence have emphasized probability, and assigned different probabilities to the forward and reversed directions of processes so that one direction is far more probable than the other. The conclu sion is promising, but the reasons for it have been obscure. In many cases the aim has been to find an explana tion in the nature of probability itself. Reactions to that have been divided: some think the aim is justified while others think it is absurd."

This is the first book-length presentation and defense of a new theory of human and machine cognition, according to which human persons are superminds. Superminds are capable of processing information not only at and below the level of Turing machines (standard computers), but above that level (the "Turing Limit"), as information processing devices that have not yet been (and perhaps can never be) built, but have been mathematically specified; these devices are known as super-Turing machines or hypercomputers. Superminds, as explained herein, also have properties no machine, whether above or below the Turing Limit, can have. The present book is the third and pivotal volume in Bringsjord's supermind quartet; the first two books were What Robots Can and Can't Be (Kluwer) and AI and Literary Creativity (Lawrence Erlbaum). The final chapter of this book offers eight prescriptions for the concrete practice of AI and cognitive science in light of the fact that we are superminds.

Originally published in 1996. Although the history of commercial-power nuclear reactors is well known, the story of the government reactors that produce weapons-grade plutonium and tritium has been shrouded in secrecy. Supplying the Nuclear Arsenal looks at the origin and development of these production reactors, Rodney Carlisle and Joan Zenzen describe a fifty-year government effort no less complex, expensive, and technologically demanding than the Polaris or Apollo programs-yet one about which most Americans know virtually nothing. Carlisle and Zenzen describe the evolution of the early reactors, the atomic weapons establishment that surrounded them, and the sometimes bitter struggles between business and political constituencies for their share of "nuclear pork." They show how, since the 1980s, aging production reactors have increased the risk of radioactive contamination of the atmosphere and water table. And they describe how the Department of Energy mounted a massive effort to find the right design for a new generation of reactors, only to abandon that effort with the end of the Cold War. Today, all American production reactors remain closed. Due to short half-life, the nation's supply of tritium, crucial to modern weapons, is rapidly dwindling. As countries like Iraq and North Korea threaten to join the nuclear club, the authors contend, the United States needs to revitalize tritium production capacity in order to maintain a viable nuclear deterrent. Meanwhile, as slowly decaying artifacts of the Cold War, the closed production reactors at Hanford, Washington, and Savannah River, South Carolina, loom ominously over the landscape.

When the Disney Company ended months of controversy in 1995 by deciding against locating its historic theme park near the National Battlefield Park in Manassas, Virginia, advocates of historic preservation had won their own battle but perhaps not their war.

Few places exemplify the problems of historic preservation as urgently as Manassas. The site of this Civil War battle, also known as Bull Run, has been encroached upon by plans for an interstate highway, a cemetery, a shopping mall, and two theme parks. As Washington continues its sprawl into the Virginia countryside, pressure will surely mount to develop the remaining open land surrounding the battlefield.

The history of Manassas battlefield illustrates that the Disney controversy is only the latest in a long line of skirmishes over historic preservation and use. Battling for Manassas is a record of the struggles to preserve the park over the past fifty years. First commissioned as a report by the National Park Service, this book tells how park managers, government officials, preservationists, developers, and concerned citizens have managed to find compromises that would protect the site while accommodating changes in the surrounding community.

Joan Zenzen's narrative places these highly publicized preservation conflicts within the framework of the park's history. She traces the efforts to preserve this Civil War battleground as it has slowly been surrounded by suburban development and discloses how issues involving visitors' facilities, recreation use of parkland, non-park-related usage, and encroachment on park boundaries by commercial interests have all come into play. Her study draws on interviews with many individuals who have been influential in the park's history--including park service officials, members of Congress, representatives of preservation groups, developers, and local officials--as well as on archival documents that help explain the nature of each controversy. She also shows that the Park Service's reluctance to conduct long-range planning following the controversy over Marriott's proposed Great America theme park contributed to later battles over development.

Battling for Manassas is the story of how one site has garnered national attention and taught Americans valuable lessons about the future of historic preservation. It demonstrates to everyone interested in the Civil War that, with only 58 of 384 sites currently under Park Service jurisdiction, what has happened at Manassas might well occur on other historic grounds threatened by development or neglect.