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How We Reason: Formal Systems, Everyday Arguments, and the Logic Behind Human Judgment
Paperback
History & Philosophy of ScienceLogic
Publisher: Independently Published
Published: Jun 29 2026
Pages: 272
Weight: 0.81
Height: 0.57 Width: 6.00 Depth: 9.00
Language: English
How We Reason is a sweeping, interdisciplinary exploration of the structures, strategies, and subtleties that shape human judgment. Edited by Ebony Allie Flynn, this volume brings together voices from philosophy, cognitive science, linguistics, artificial intelligence, and argumentation theory to illuminate the many ways we reason-formally, informally, and everywhere in between. Across fifty-five chapters, the book traces the logic behind our decisions, beliefs, conversations, and public discourse, revealing that reasoning is not a single skill but a constellation of practices shaped by context, purpose, and interpretation.
At its core, How We Reason bridges two great traditions. Formal logic offers clarity, rigor, and the power of abstraction. It defines validity, builds systems, and underpins mathematics and computation. Informal logic, by contrast, operates in the lived world of conversation, persuasion, and everyday decision-making. It evaluates arguments not by symbolic structure alone but by relevance, credibility, and sufficiency. This book treats both traditions not as rivals but as complementary lenses-each essential for understanding how humans think, argue, and make sense of complexity.
The volume begins with foundational chapters on formal systems: propositional and predicate logic, modal and non-classical logics, proof theory, and the limits revealed by Gödel's incompleteness theorems. It then turns to the architecture of informal reasoning, exploring fallacies, rhetorical framing, testimony, and the standards that guide everyday argument evaluation. Readers encounter the logic of scientific explanation, the structure of legal reasoning, the dynamics of democratic deliberation, and the interpretive work of natural language understanding. Throughout, the book emphasizes that reasoning is not merely a technical achievement-it is a human practice, shaped by emotion, social norms, and the need to communicate across difference.
Special attention is given to the role of artificial intelligence, which increasingly blends formal logic with informal, context-sensitive reasoning. Chapters explore how AI systems interpret language, infer intent, and navigate uncertainty, revealing both the power and the limits of computational models. The book also examines how reasoning operates under pressure: in misinformation-rich environments, in emotionally charged debates, and in moments of ethical decision-making. These chapters underscore the importance of clarity, humility, and intellectual generosity in a world where reasoning is both a civic responsibility and a personal skill.
Throughout How We Reason, contributors treat logic not as a sterile discipline but as a living practice. They show that reasoning is present in every conversation, every disagreement, every moment of reflection. They reveal that good reasoning requires not only structure but sensitivity-not only rules but judgment. The result is a book that is both intellectually rigorous and deeply human, offering readers a panoramic view of how we think, argue, and understand.
Written for students, scholars, and curious readers alike, How We Reason is a guide to the logic behind human judgment. It invites readers to explore the foundations of inference, the dynamics of dialogue, and the possibilities of communication. It shows that reasoning is not confined to classrooms or laboratories but is woven into the fabric of everyday life. And it affirms that to reason well is to engage the world with clarity, care, and imagination.
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