Initially proposed as rivals of classical logic, alternative logics have become increasingly important in areas such as computer science and artificial intelligence. Fuzzy logic, in particular, has motivated major technological developments in recent years.

Susan Haack's Deviant Logic provided the first extended examination of the philosophical consequences of alternative logics. In this new volume, Haack includes the complete text of Deviant Logic, as well as five additional papers that expand and update it. Two of these essays critique fuzzy logic, while three augment Deviant Logic's treatment of deduction and logical truth. Haack also provides an extensive new foreword, brief introductions to the new essays, and an updated bibliography of recent work in these areas.

Deviant Logic, Fuzzy Logic will be indispensable to students of philosophy, philosophy of science, linguistics, mathematics, and computer science, and will also prove invaluable to experienced scholars working in these fields.

In literary studies today, debates about the purpose of literary criticism and about the place of formalism within it continue to simmer across periods and approaches. Anna Kornbluh contributes to—and substantially shifts—that conversation in The Order of Forms by offering an exciting new category, political formalism, which she articulates through the co-emergence of aesthetic and mathematical formalisms in the nineteenth century. Within this framework, criticism can be understood as more affirmative and constructive, articulating commitments to aesthetic expression and social collectivity. 
 
Kornbluh offers a powerful argument that political formalism, by valuing forms of sociability like the city and the state in and of themselves, provides a better understanding of literary form and its political possibilities than approaches that view form as a constraint. To make this argument, she takes up the case of literary realism, showing how novels by Dickens, Brontë, Hardy, and Carroll engage mathematical formalism as part of their political imagining. Realism, she shows, is best understood as an exercise in social modeling—more like formalist mathematics than social documentation. By modeling society, the realist novel focuses on what it considers the most elementary features of social relations and generates unique political insights. Proposing both this new theory of realism and the idea of political formalism, this inspired, eye-opening book will have far-reaching implications in literary studies.