In this important new work, Haack develops an original theory of empirical evidence or justification, and argues its appropriateness to the goals of inquiry. In so doing, Haack provides detailed critical case studies of Lewis's foundationalism; Davidson's and Bonjour's coherentism; Popper's 'epistemology without a knowing subject'; Quine's naturalism; Goldman's reliabilism; and Rorty's, Stich's, and the Churchlands' recent obituaries of epistemology.

The first systematic exposition of all the central topics in the philosophy of logic, Susan Haack's book has established an international reputation for its accessibility, clarity, conciseness, orderliness, and range as well as for its thorough scholarship and careful analyses. Haack discusses the scope and purpose of logic, validity, truth-functions, quantification and ontology, names, descriptions, truth, truth-bearers, the set-theoretical and semantic paradoxes, and modality. She also explores the motivations for a whole range of non-classical systems of logic, including many-valued logics, (...) fuzzy logic, moddal and tense logics, and relevance logics. Persupposing only an elementary knowledge of formal logic, this book includes many useful summary tables and diagrams, as well as a helpful glossary of technical terms. Wide-ranging, informative, and eminently readable, this book has proven a valuable resource for generations of students and scholars in a variety of disciplines outside philosophy needing guidance on the philosophy of logic. (shrink)

PART ONE I 'Alternative' in 'Alternative logic There are many systems of logic — many-valued systems and modal systems for instance - which are non-standard ...

Sweeping in scope, penetrating in analysis, and generously illustrated with examples from the history of science, this new and original approach to familiar questions about scientific evidence and method tackles vital questions about science and its place in society. Avoiding the twin pitfalls of scientism and cynicism, noted philosopher Susan Haack argues that, fallible and flawed as they are, the natural sciences have been among the most successful of human enterprises-valuable not only for the vast, interlocking body of knowledge they (...) have discovered, and not only for the technological advances that have improved our lives, but as a manifestation of the human talent for inquiry at its imperfect but sometimes remarkable best. This wide-ranging, trenchant, and illuminating book explores the complexities of scientific evidence, and the multifarious ways in which the sciences have refined and amplified the methods of everyday empirical inquiry; articulates the ways in which the social sciences are like the natural sciences, and the ways in which they are different; disentangles the confusions of radical rhetoricians and cynical sociologists of science; exposes the evasions of apologists for religious resistance to scientific advances; weighs the benefits and the dangers of technology; tracks the efforts of the legal system to make the best use of scientific testimony; and tackles predictions of the eventual culmination, or annihilation, of the scientific enterprise. Writing with verve and wry humor, in a witty, direct, and accessible style, Haack takes readers beyond the "Science Wars" to a balanced understanding of the value, and the limitations, of the scientific enterprise. (shrink)

Forthright and wryly humorous, philosopher Susan Haack deploys her penetrating analytic skills on some of the most highly charged cultural and social debates of recent years. Relativism, multiculturalism, feminism, affirmative action, pragmatisms old and new, science, literature, the future of the academy and of philosophy itself—all come under her keen scrutiny in Manifesto of a Passionate Moderate.

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. (shrink)

Is truth in the law just plain truth - or something sui generis? Is a trial a search for truth? Do adversarial procedures and exclusionary rules of evidence enable, or impede, the accurate determination of factual issues? Can degrees of proof be identified with mathematical probabilities? What role can statistical evidence properly play? How can courts best handle the scientific testimony on which cases sometimes turn? How are they to distinguish reliable scientific testimony from unreliable hokum? These interdisciplinary essays explore (...) such questions about science, proof, and truth in the law. With her characteristic clarity and verve, Haack brings her original and distinctive work in theory of knowledge and philosophy of science to bear on real-life legal issues. She includes detailed analyses of a wide variety of cases and lucid summaries of relevant scientific work, of the many roles of the scientific peer-review system, and of relevant legal developments. (shrink)

As the English word “scientism” is currently used, it is a trivial verbal truth that scientism—an inappropriately deferential attitude to science—should be avoided. But it is a substantial question when, and why, deference to the sciences is inappropriate or exaggerated. This paper tries to answer that question by articulating “six signs of scientism”: the honorific use of “science” and its cognates; using scientific trappings purely decoratively; preoccupation with demarcation; preoccupation with “scientific method”; looking to the sciences for answers beyond their (...) scope; denying the legitimacy or worth of non-scientific (e.g., legal or literary) inquiry, or of writing poetry or making art. (shrink)

Forthright and wryly humorous, philosopher Susan Haack deploys her penetrating analytic skills on some of the most highly charged cultural and social debates of recent years. Relativism, multiculturalism, feminism, affirmative action, pragmatisms old and new, science, literature, the future of the academy and of philosophy itself—all come under her keen scrutiny in _Manifesto of a Passionate Moderate_. "The virtue of Haack's book, and I mean _virtue_ in the ethical sense, is that it embodies the attitude that it exalts... Haack's voice (...) is urbane, sensible, passionate—the voice of philosophy that matters. How good to hear it again."—Jonathan Rauch, _Reason_ "A tough mind, confident of its power, making an art of logic... a cool mastery."—Paul R. Gross, _Wilson Quarterly_ "Few people are better able to defend the notion of truth, and in strong, clear prose, than Susan Haack... a philosopher of great distinction."—Hugh Lloyd-Jones, _National Review_ "If you relish acute observation and straight talk, this is a book to read."—_Key Reporter_ "Everywhere in this book there is the refreshing breeze of common sense, patiently but inexorably blowing."—Roger Kimball, _Times Literary Supplement_ "A refreshing alternative to the extremism that characterizes so much rhetoric today."—_Kirkus Reviews_. (shrink)

It is often taken for granted by writers who propose--and, for that matter, by writers who oppose--'justifications' of inductions, that deduction either does not need, or can readily be provided with, justification. The purpose of this paper is to argue that, contrary to this common opinion, problems analogous to those which, notoriously, arise in the attempt to justify induction, also arise in the attempt to justify deduction.

For some time, it seemed that one had to choose between two sharply different theories of epistemic justification, foundationalism and coherentism. Foundationalists typically held that some beliefs were certain, and, hence, basic. Basic beliefs could impart justification to other, non-basic beliefs, but needed no such support themselves. Coherentists denied that there are any basic beliefs; on their view, all justified beliefs require support from other beliefs. The divide between foundationalism and coherentism has narrowed lately, and Susan Haack attempts to synthesize (...) these competing accounts into a view she calls "foundherentism.". (shrink)

Introduction -- Foundationalism versus coherentism : a dichotomy disclaimed -- Foundationalism undermined -- Coherentism discomposed -- Foundherentism articulated -- The evidence of the senses : refutations and conjectures -- Naturalism disambiguated -- The evidence against reliabilism -- Revolutionary scientism subverted -- Vulgar pragmatism : an unedifying prospect -- Foundherentism ratified -- Selected essays -- "Know" is just a four-letter word -- Knowledge and propaganda : reflections of an old feminist -- "The ethics of belief" reconsidered -- Epistemology legalized : or, (...) truth, justice, and the American way. (shrink)

We need to find a middle way between the exaggerated deference towards science characteristic of scientism, and the exaggerated suspicion characteristic of anti-scientific attitudes — to acknowledge that science is neither sacred nor a confidence trick. The Critical Commonsensist account of scientific evidence and scientific method offered here corrects the narrowly logical approach of the Old Deferentialists without succumbing to the New Cynics' sociologism or their factitious despair of the epistemic credentials of science.

Quine's naturalized epistemology is ambivalent between a modest naturalism according to which epistemology is an a posteriori discipline, an integral part of the web of empirical belief, and a scientistic naturalism according to which epistemology is to be conducted wholly within the natural sciences. This ambivalence is encouraged by Quine's ambiguous use of science, to mean sometimes, broadly, our presumed empirical knowledge and sometimes, narrowly, the natural sciences. Quine's modest naturalism is reformist, tackling the traditional epistemological problems in a novel (...) way; his scientistic naturalism is revolutionary, requiring restriction and reconceptualization of epistemological problems. In particular, his scientistic naturalism trivializes the question of the epistemic standing of the natural sciences, whereas modest naturalism takes it seriously, and can offer a plausible answer. (shrink)

“The most likely use for Haack’s volume will be in introductory pragmatism courses and it is eminently appropriate for this task. However, others who would wish to speak out about pragmatism authoritatively would do well to go through the book from cover to cover. Outside of philosophy, the volume provides an introduction to a vital aspect of what philosophy has to offer to other disciplines, psychology among them....it is hard to think what could have been done to improve upon the (...) collection.”. (shrink)

We need to find a middle way between the exaggerated deference towards science characteristic of scientism, and the exaggerated suspicion characteristic of anti-scientific attitudes — to acknowledge that science is neither sacred nor a confidence trick. The Critical Commonsensist account of scientific evidence and scientific method offered here corrects the narrowly logical approach of the Old Deferentialists without succumbing to the New Cynics' sociologism or their factitious despair of the epistemic credentials of science.

After explaining why, after dealing with post‐modernist confusions about truth in various books and articles from the mid‐1990s to, most recently, 2014 (§1), Haack returns to the topic of truth. She begins (§2) with some thoughts about the claim that concern for truth is on the decline, and perhaps at a new low; a claim that, sadly, may well be true. Then (§3) she looks at some of the many forms that carelessness with the truth may take, and shows that, (...) so far from revealing that the concept of truth is seriously problematic or that there is no such thing as objective truth, it simply makes no sense to say that lies, half‐truths, etc., are ubiquitous unless there is such a thing as truth, and a legitimate truth‐concept. After that, (§4) she argues that, of course, there is such a thing as objective truth, and a robust truth‐concept. And finally, (§5) she suggests some ways to fight against the rising tide of unconcern for truth—and gives her answer to the (trick) question in her subtitle. (shrink)

The reformist philosophy of the classical pragmatist tradition has gradually evolved into the now-fashionable revolutionary styles of pragmatism, some scientistic, some literary. This evolution is traced from Peirce, James, Dewey, and Mead, through Schiller, Lewis, Hook,and Quine, to Rorty’s literary-political neo-pragmatism. Rather than get hung up on the question of which variants qualify as authentic pragmatism, it is better — more fruitful, and appropriately forward looking— to ask what we can learn from the older tradition, and what we can salvage (...) from the new. (shrink)

Part of an early version of this paper was read at the University of Warwick in October 1977, and a later version was read at the Newcastle Royal Institute of Philosophy in November 1977 and at Aberystwyth and Oxford in early 1978. Thanks are due to the many colleagues and friends who made helpful comments on early drafts; special thanks to Hugh Mellor, Rita Nolan and Paul Weiss for detailed written criticisms, and to Don Locke, for very helpful discussions.

There is one truth, but many truths: i.e., one unambiguous, non-relative truth-concept, but many and various propositions that are true. One truth-concept: to say that a proposition is true is to say (not that anyone, or everyone, believes it, but) that things are as it says; but many truths: particular empirical claims, scientific theories, historical propositions, mathematical theorems, logical principles, textual interpretations, statements about what a person wants or believes or intends, about grammatical and legal rules, etc., etc. But, as (...) Frank Ramsey once said, “There is no platitude so obvious that eminent philosophers have not denied it”; and as soon as you ask why anyone would deny that there is one truth-concept, or that there are many true propositions, it becomes apparent that my initial, simple formula disguises many complexities. (shrink)

In 1880, when Oliver Wendell Holmes (later to be a Justice of the U.S. Supreme Court) criticized the logical theology of law articulated by Christopher Columbus Langdell (the first Dean of Harvard Law School), neither Holmes nor Langdell was aware of the revolution in logic that had begun, the year before, with Frege's Begriffsschrift. But there is an important element of truth in Holmes's insistence that a legal system cannot be adequately understood as a system of axioms and corollaries; and (...) this element of truth is not obviated by the more powerful logical techniques that are now available. (shrink)

The pragmatist tradition in epistemology initiated by Peirce has, I believe, proved a particularly fruitful one. And since Peirce’s work in the theory of knowledge was motivated, to a considerable extent, by his radical opposition to the Cartesian tradition, a close study of the early papers in which Peirce offers a comprehensive critique of Cartesian epistemology promises to be philosophically as well as historically rewarding.

If successful scientific inquiry is to be possible, there must be a world that is independent of how we believe it to be, and in which there are kinds and laws; and we must have the sensory apparatus to perceive particular things and events, and the capacity to represent them, to form generalized explanatory conjectures, and check how these conjectures stand up to further experience. Whether these preconditions are met is not a question the sciences can answer; it is specifically (...) philosophical. This is why the myriad forms of scientistic philosophy in vogue today (neurophilosophy, experimental philosophy, naturalized metaphysics, evangelical-atheist reductionism, etc), are all hollow at the core. Does this mean we must return to the old, a priori analytic model? No! What is needed instead is scientific philosophy in the sense Peirce articulated more than a century ago: philosophy motivated by a genuine desire to discover the truth, and relying not solely on reason but also on experience—only not the special, recherché experience required by the sciences, but close attention to aspects of everyday experience so familiar we hardly notice them. (shrink)

Realism is multiply ambiguous. The central concern of Part 1 of this paper is to distinguish several of its many senses — four (Theoretical Realism, Cumulative Realism, Progressive Realism and Optimistic Realism) in which it refers to theses about the status of scientific theories, and five (Minimal Realism, Ambitious Absolutism, Transcendentalism, Nidealism, Scholastic Realism) in which it refers to theses about the nature of truth or truth-bearers. Because Realism has these several, largely independent, senses, the conventional wisdom that Tarski's theory (...) of truth supports realism, and that the Meaning-Variance thesis undermines it, needs re-evaluation. The concern of the rest of the paper is to sort out in which senses the conventional wisdom, with respect to Tarski's theory (Part 2) and the Meaning-Variance thesis (Part 3), is correct. (shrink)

Haack articulates something of what she takes the moral demands of academic life to be, calling for such virtues as industry, honesty, realism, patience, and consideration. She then explains why she believes the current academic environment is sapping the strength of character these virtues require, and why graduate students are caught in the middle. She writes primarily about philosophy, but much of what she has to say applies to other humanities disciplines and much of that to other disciplines as well---and (...) while she writes primarily about the U.S. situation, much of what she says applies elsewhere too. (shrink)

'Realism' is multiply ambiguous. The central concern of Part 1 of this paper is to distinguish several of its many senses -- four in which it refers to theses about the status of scientific theories, and five in which it refers to theses about the nature of truth or truth-bearers. Because 'Realism' has these several, largely independent, senses, the conventional wisdom that Tarski's theory of truth supports realism, and that the Meaning-Variance thesis undermines it, needs re-evaluation. The concern of the (...) rest of the paper is to sort out in which senses the conventional wisdom, with respect to Tarski's theory and the Meaning-Variance thesis , is correct. (shrink)

In many toxic-tort cases - notably in Oxendine v. Merrell Dow Pharmaceuticals, Inc, and in Joiner v. G.E., - plaintiffs argue that the expert testimony they wish to present, though no part of it is sufficient by itself to establish causation "by a preponderance of the evidence," is jointly sufficient to meet this standard of proof; and defendants sometimes argue in response that it is a mistake to imagine that a collection of pieces of weak evidence can be any stronger (...) than its individual components. This article draws on the epistemological theory I first presented in 1993 in Evidence and Inquiry, and then amplified and refined in 2003 in Defending Science - Within Reason. This theory of evidence shows that, under certain conditions, a combination of pieces of evidence none of which is sufficient by itself really can warrant a casual conclusion to a higher degree than any of its components alone. When my account is applied to the very complex congeries of evidence typically proffered to prove general causation in these toxic-tort cases, it improves on the influential "Bradford Hill criteria" for assessing causation; and it suggests answers to questions frequently raised in such cases: e.g., whether epidemiological evidence is essential for proof of causation, and whether such evidence should be excluded if it is not statistically significant. Moreover, the argument of this paper reveals that by obliging courts to screen each item of expert testimony individually for reliability, the atomism implicit in Daubert will sometimes stand in the way of an accurate assessment of the worth of complex causation evidence. (shrink)