Nicholas Rescher

Historically, there has been great deliberation about the limits of human knowledge. Isaac Newton, recognizing his own shortcomings, once described himself as “a boy standing on the seashore... whilst the great ocean of truth lay all underscored before me.” In _Ignorance,_ Nicholas Rescher presents a broad-ranging study that examines the manifestations, consequences, and occasional benefits of ignorance in areas of philosophy, scientific endeavor, and ordinary life. Citing philosophers, theologians, and scientists from Socrates to Steven Hawking, Rescher seeks to uncover the factors that hinder our cognition. Rescher categorizes ignorance as ontologically grounded, or epistemically grounded. He then defines the basis of ignorance: inaccessible data; statistical fogs; secreted information; past data that have left no trace; future discoveries; future contingencies; vagrant predicates; and superior intelligences. Such impediments set limits to inquiry and mean that while we can always extend our existing knowledge-variability here is infinite-there are things that we will never know. Cognitive finitude also hinders our ability to assimilate more than a certain number of facts. We may acquire additional information, but lack the facility to interpret it. More information does not always increase knowledge; it may point us further down the path toward an erroneous conclusion. In light of these deficiencies, Rescher looks to the role of computers in solving problems and expanding our knowledge base, but finds limits to their reasoning capacity. As Rescher's comprehensive study concludes, ignorance itself is a fertile topic for knowledge, and recognizing the boundaries of our comprehension is where wisdom begins

Philosophers traditionally see the task of philosophy as providing rational guidance to thought and action—as answering “the big questions” about the world, ourselves, and our place in its scheme of things. But does philosophy provide such answers? The motto of Phi Beta Kappa, America’s oldest academic confraternity, is the proud dictum “Philosophy is the guide of life”. But is this claim defensible? Does philosophy indeed provide a satisfactory guide to decision and action in the practical affairs of life?

Epistemology is more than the theory of knowledge. Its range of concern includes not only knowledge proper but also rational belief, probability, plausibility, evidentiation, and not least, erotetics, the business of raising and resolving questions. Aristotle indicated that human inquiry is grounded in wonder; when matters are so out of the ordinary we puzzle about the reason why and seek for an explanation. With increasing sophistication, the ordinary as well as the extraordinary excites the intellect, so that questions gain an increasing prominence within epistemology. Inquiry Dynamics focuses on the phenomena and theory of rational inquiry, focusing on its concern for questions and their management. An introductory chapter lays the groundwork of the book's deliberations, followed by chapter 2, explaining the basic concepts involved in the abstract logic of questions and answers and sets out the generic fundamentals of the domain. Chapters 3 and 4 expound the theoretical principles that characterize the field of question epistemology in general, clarifying the fundamental themes and theses of the subject. Chapters 5 through 9 then explore the landscape of question epistemology within science. Rescher seeks to show that there are limits-restrictions of basic principle-to our ability to resolve scientific questions. The concluding chapter argues in particular that the grand goal of an ultimate theory, one resolving all explanatory questions, has to be approached with great caution. Throughout Rescher emphasizes that a question-oriented approach to the process of inquiry serves to highlight the inherent limitations of the cognitive project. Rescher's question-oriented treatment of epistemology proceeds in the tradition of Kant and stands in decided contrast to the dominant knowledge-oriented approach originating with Descartes. He demonstrates that a concern for the issue of plausible question resolution is a necessary component of the epistemological enterprise. Inquiry Dynamics will be of interest to philosophers, scientists, and social scientists.

Consistency is often pictured as an indispensable requisite for rationality. The paper argues that this is overly rigoristic. Inconsistency can be treated as a matter of isolable singularities rather than an all-destructive disaster. The paper, supports and illustrates a perspective on which consistency can be seen as a desideratum rather than a totaly non-negotiable demand. The argumentation of the paper casts consistency in the role of a cognitive ideal rather than a sine qua non condition of rational process