This chapter focuses on one of the common fallacies in Western philosophy called 'mystery, therefore magic fallacy' (MTM). One commits the (MTM) when one takes the fact that one cannot find a “natural” or “rational” explanation for some event or thing as a reason to favor or to accept a magical, supernatural, or fantastic explanation for that event or thing. This fallacy gets its name from the fact that we instinctually avoid it every time we watch a good magic show. (...) MTM is very common in religious circles since “God did it” is often the religious supernatural explanation of choice. In fact, MTM is simply another way of committing the appeal to ignorance fallacy. When committing MTM, one simply takes one's inability to prove there is a natural explanation (by finding one) to be a good reason to conclude there is not one. (shrink)

This chapter offers a critique of intelligent design arguments against evolution and a philosophical discussion of the nature of science, drawing several lessons for the teaching of evolution and for science education in general. I discuss why Behe’s irreducible complexity argument fails, and why his portrayal of organismal systems as machines is detrimental to biology education and any under-standing of how organismal evolution is possible. The idea that the evolution of complex organismal features is too unlikely to have occurred by (...) random mutation and selection (as recently promoted by Dembski) is very widespread, but it is easy to show students why such small probability arguments are fallacious. While intelligent design proponents have claimed that the exclusion of supernatural causes mandated by scientific methods is dogmatically presupposed by science, scientists have an empirical justification for using such methods. This justification is instructive for my discussion of how to demarcate science from pseudoscience. I argue that there is no universal account of the nature of science, but that the criteria used to judge an intellectual approach vary across historical periods and have to be specific to the scientific domain. Moreover, intellectual approaches have to be construed as practices based on institutional factors and values, and to be evaluated in terms of the activities of their practitioners. Science educators should not just teach scientific facts, but present science as a practice and make students reflect on the nature of science, as this gives them a better appreciation of the ways in which intelligent design falls short of actual science. (shrink)

This Element focuses on three challenges of evolution to religion: teleology, human origins, and the evolution of religion itself. First, religious worldviews tend to presuppose a teleological understanding of the origins of living things, but scientists mostly understand evolution as non-teleological. Second, religious and scientific accounts of human origins do not align in a straightforward sense. Third, evolutionary explanations of religion, including religious beliefs and practices, may cast doubt on their justification. We show how these tensions arise and offer potential (...) responses for religion. Individual religions can meet these challenges, if some of their metaphysical assumptions are adapted or abandoned. (shrink)

Tracing the leading role of emotions in the evolution of the mind, a philosopher and a psychologist pair up to reveal how thought and culture owe less to our faculty for reason than to our capacity to feel. Many accounts of the human mind concentrate on the brain’s computational power. Yet, in evolutionary terms, rational cognition emerged only the day before yesterday. For nearly 200 million years before humans developed a capacity to reason, the emotional centers of the brain were (...) hard at work. If we want to properly understand the evolution of the mind, we must explore this more primal capability that we share with other animals: the power to feel. Emotions saturate every thought and perception with the weight of feelings. The Emotional Mind reveals that many of the distinctive behaviors and social structures of our species are best discerned through the lens of emotions. Even the roots of so much that makes us uniquely human—art, mythology, religion—can be traced to feelings of caring, longing, fear, loneliness, awe, rage, lust, playfulness, and more. From prehistoric cave art to the songs of Hank Williams, Stephen T. Asma and Rami Gabriel explore how the evolution of the emotional mind stimulated our species’ cultural expression in all its rich variety. Bringing together insights and data from philosophy, biology, anthropology, neuroscience, and psychology, The Emotional Mind offers a new paradigm for understanding what it is that makes us so unique. (shrink)

A central thesis of intelligent‐design theorists is that physical and chemical laws and chance are insufficient to account for irreducibly complex biological structures and that intelligent design is necessary to account for such phenomena. This assertion, however, still implies a reductionist ontology. We need to recognize that reality displays multiple modes of being beyond simply chemical and physical modes of being, each of which is governed by laws for that mode of being. This essay argues for an alternate framework for (...) understanding life phenomena that is neither philosophical materialism nor intelligent‐design theory. (shrink)

Intelligent design theorists assert that ID is a scientific theory that is merely consistent with some religious beliefs. Many critics point to the circumstantial evidence of the apparent development of ID from creation science and the affiliation of ID with mainstream evangelical organizations to assert its religious orientation. This article suggests that the position of ID proponents is a substantial understatement, and that beyond the circumstantial evidence of critics, fundamental Christian doctrine constitutes the essence of ID theory. The bulk of (...) scholarship on ID is polarized into those for and against, as most focus on adjudicating ID truth claims, but this adversarial structure elides some important complexities. This article sets aside the truth claims of ID and focuses more broadly on the discourse in which it is situated to show the Christian core of ID and to examine several hallmarks of religion apparent from this perspective. (shrink)

If the problem of the origin of life is conceptualized as a process of emergence of biochemistry from proto-biochemistry, which in turn emerged from the organic chemistry and geochemistry of primitive earth, then the resources of the new sciences of complex systems dynamics can provide a more robust conceptual framework within which to explore the possible pathways of chemical complexification leading to living systems and biosemiosis. In such a view the emergence of life, and concomitantly of natural selection and biosemiosis, (...) is the result of deep natural laws (the outlines of which we are only beginning to perceive) and reflects a degree of holism in those systems that led to life. Further, such an approach may lead to the development of a more general theory of biology and of natural organization, one informed by semiotic concepts. (shrink)

The design argument was rebutted by David Hume. He argued that the world and its contents (such as organisms) were not analogous to human artifacts. Hume further suggested that there were equally plausible alternatives to design to explain the organized complexity of the cosmos, such as random processes in multiple universes, or that matter could have inherent properties to self-organize, absent any external crafting. William Paley, writing after Hume, argued that the functional complexity of living beings, however, defied naturalistic explanations. (...) In effect he dared anyone to come up with an alternative to his inference to design, and hence a designer, outside of nature. Charles Darwin explained the apparent design of functional complexity by his theory of natural selection. Asa Gray, however, in essays as well as in correspondence with Darwin argued that natural selection allowed for a type of ' evolutionary teleology' in which design at most could be considered the result of universal principles. F. E. Hicks updated Hume by specifically objecting to the use of design arguments by Paley. Hicks argued that the apparent design seen in nature reflected order at a deep level in nature. The design argument was briefly revived by Lawrence Henderson early in the twentieth century but he ultimately concluded that design and teleology were not necessarily mutually entailing and he retracted his design argument in favor of one that he termed ' natural teleology'. The current claims of ' intelligent design' have the same logical problems that have beset previous design arguments. If design is divorced from teleology and its discontents put behind us, then there is a possibility that the latter can have a place in the development of theories to explain the phenomena of emergent complexity. (shrink)

This paper describes an argumentative fallacy we call ‘Retroductive Analogy.’ It occurs when the ability of a favored hypothesis to explain some phenomena, together with the fact that hypotheses of a similar sort are well supported, is taken to be sufficient evidence to accept the hypothesis. This fallacy derives from the retroductive or abductive form of reasoning described by Charles Sanders Peirce. According to Peirce’s account, retroduction can provide good reasons to pursue a hypothesis but does not, by itself, provide (...) good reasons to believe the hypothesis. In successful applications of retroduction, pursuit leads to the accumulation of evidence. In retroductive analogy, comparison with other successful hypotheses is substituted for the genuine pursuit of evidence. We describe a case from ecological genetics in which retroduction plays a legitimate role as the initial phase of an ongoing research program that serves to accumulate genuine evidence for a hypothesis. We also examine two contexts in which the fallacy of retroductive analogy occurs: in defenses of Intelligent Design Theory and in defense of some hypotheses in Evolutionary Psychology. (shrink)

This paper proposes a social account for the origin of the truth value and the emergence of the first declarative sentence. Such a proposal is based on two assumptions. The first is known as the social intelligence hypothesis: that the cognitive evolution of humans is first and foremost an adaptation to social demands. The second is the function-first approach to explaining the evolution of traits: before a prototype of a new trait develops and the adaptation process begins, something already existing (...) is used for a new purpose. Applied to the emergence of declarative sentences (statements), this suggests something already existing––natural signs (such as indexical objects)––was used for the declarative function and thereby integrated into communication. I show that index display (such as the display of hunting trophies) can imply a conceptual structure similar to that informing the syntax of sentences. The view developed in this paper is broadly consistent with the argumentative theory of Mercier and Sperber, which suggests that reasoning is less adapted to decision making than to social purposes such as winning disputes. In this paper I extend this view to the evaluation of propositions expressed in declarative sentences. According to my proposal, the first declarative sentence emerged as the negation of the (implicit) negation of an implicit statement. Thereby, I suggest that the binary structure of the truth value underlying any declarative sentence is founded on disagreements based on conflicts of interests. (shrink)

This article criticises Alvin Plantinga’s claim that ‘basic’ design beliefs, which arise without a conscious inference, have more positive epistemic status than non-basic ones and that we cannot evaluate the probabilities involved in inferential, inductive design arguments.

(2013). A Review of “Evolutionaries: Unlocking the Spiritual and Cultural Potential of Science's Greatest Idea”. World Futures: Vol. 69, No. 3, pp. 184-195.

Some philosophers and scientists argue that as science progresses the religious domain shrinks ever more. They see the advance of science as an argument against religion and for naturalism. In what follows I construct the argument that is tacit in this line of reasoning and criticize it.

When proponents of Intelligent Design (ID) theory deny that their theory is religious, the minimalistic theory they have in mind (the mini-ID theory) is the claim that the irreducibly complex adaptations found in nature were made by one or more intelligent designers. The denial that this theory is religious rests on the fact that it does not specify the identity of the designer—a supernatural God or a team of extra-terrestrials could have done the work. The present paper attempts to show (...) that this reply underestimates the commitments of the mini-ID Theory. The mini-ID theory, when supplemented with four independently plausible further assumptions, entails the existence of a supernatural intelligent designer. It is further argued that scientific theories, such as the Darwinian theory of evolution, are neutral on the question of whether supernatural designers exist. (shrink)

While "scientism" is typically regarded as a position about the exclusive epistemic authority of science held by a certain class of "cultured despisers" of "religion", we show that only on the assumption of this sort of view do purportedly "scientific" claims made by proponents of "intelligent design" appear to lend epistemic or apologetic support to claims affirmed about God and God's action in "creation" by Christians in confessing their "faith". On the other hand, the hermeneutical strategy that better describes the (...) practice and method of Christian theologians, from the inception of theological reflection in the Christian tradition, acknowledges the epistemic authority of the best available tests for truth in areas of human inquiry such as science and history. But this strategy does not assume that such tests, whose authority must be regarded as provisional, provides authority for the warrant of affirming claims constituting the confessed "faith". By attributing theological import to claims advanced by appeal to the best available tests for truth in the practice of science, supporters of ID not only confuse the epistemic authority of these tests with the normative authority of a faith community's confessional identity, but impute to scientific tests for truth a sort of authority that even goes beyond the "methodological naturalism" against which they counterpose their claims. (shrink)

Intelligent Design creationism is often criticized for failing to be science because it falls afoul of some demarcation criterion between science and non-science. This paper argues that this objection to Intelligent Design is misplaced because it assumes that a consistent non-theological characterization of Intelligent Design is possible. In contrast, it argues that, if Intelligent Design is taken to be non-theological doctrine, it is not intelligible. Consequently, a demarcation criterion cannot be used to judge its status. This position has the added (...) advantage of providing reasons to reject Intelligent Design creationism without invoking potentially philosophically controversial demarcation criteria. (shrink)

Current Perspectives in Philosophy of Biology.

Abstract. I respond to the criticisms of David Wisdo of my position on the relationship between science and religion. I argue that although he gives a full and fair account of my position, he fails to grasp fully my use of the metaphorical basis of modern science in my argument that, because of its mechanistic commitment, there are some questions that science not only does not answer but that science does not even attempt to answer. Hence, my position stands and (...) plays a crucial role in our understanding of the science–religion relationship. (shrink)

The teaching of evolution in American high schools has long been a source of controversy. The past decade has seen an important shift in the rhetoric of anti-evolutionists, toward arguments of a strongly mathematical character. These mathematical arguments, while different in their specifics, follow the same general program and rely on the same underlying model of evolution. We shall discuss the nature and history of this program and model and describe general reasons for skepticism with regard to any anti-evolutionary arguments (...) based upon them. We shall then survey the major arguments used by anti-evolutionists, to show how our general considerations make it possible to quickly identify their weakest points. (shrink)

Until recently, little attention has been paid in the school classroom to creationism and almost none to intelligent design. However, creationism and possibly intelligent design appear to be on the increase and there are indications that there are more countries in which schools are becoming battle-grounds over them. I begin by examining whether creationism and intelligent design are controversial issues, drawing on Robert Dearden's epistemic criterion of the controversial and more recent responses to and defences of this. I then examine (...) whether the notion of ‘worldviews’ in the context of creationism is a useful one by considering the film March of the Penguins. I conclude that the ‘worldviews’ perspective on creationism is useful for two reasons: first it indicates the difficulty of using the criterion of reason to decide whether an issue is controversial or not; secondly, it suggests that standard ways of addressing the diversity of student views in a science classroom may be inadequate. I close by examining the implications of this view for teaching in science lessons and elsewhere, for example in religious education lessons and citizenship lessons and at primary level where subject divisions cannot be made in so clear-cut a manner. (shrink)

Evolution is often seen as a site of contestation within the school curriculum. The topic of evolution is therefore often considered to be ‘controversial’. I first examine what is meant by ‘controversial’ and conclude that while, in an everyday sense, the topic of evolution can indeed be considered to be controversial, this term can mislead. A more fruitful way forward may be to regard the topic of evolution as ‘sensitive’. I examine reasons why evolution might be considered sensitive – noting (...) that for a not inconsiderable number of people it is so because of a perceived conflict with religious views and also because it may be existentially disturbing for some. Rather little attention has been paid in the philosophy of education literature as to how we might deal with sensitive issues. I therefore look at what we mean by describing an issue as sensitive and at how teachers might deal in the classroom with such issues, specifically evolution. (shrink)

The explanatory role of natural selection is one of the long-term debates in evolutionary biology. Nevertheless, the consensus has been slippery because conceptual confusions and the absence of a unified, formal causal model that integrates different explanatory scopes of natural selection. In this study we attempt to examine two questions: (i) What can the theory of natural selection explain? and (ii) Is there a causal or explanatory model that integrates all natural selection explananda? For the first question, we argue that (...) five explananda have been assigned to the theory of natural selection and that four of them may be actually considered explananda of natural selection. For the second question, we claim that a probabilistic conception of causality and the statistical relevance concept of explanation are both good models for understanding the explanatory role of natural selection. We review the biological and philosophical disputes about the explanatory role of natural selection and formalize some explananda in probabilistic terms using classical results from population genetics. Most of these explananda have been discussed in philosophical terms but some of them have been mixed up and confused. We analyze and set the limits of these problems. (shrink)

In a document penned under the direction of its then-president Cardinal Joseph Ratzinger, the Vatican’s International Theological Commission observed that many neo-Darwinian materialists and their Christian critics share a misunderstanding of the nature of divine causality. This article explores the thought of Joseph Ratzinger in view of proposing the features of a path that seeks to eschew these faulty understandings of how God causes evolutionary change within our world, thus providing an alternative to the Intelligent Design movement’s approach to creation.. (...) Ratzinger has a deep respect for the integrity of nature, rejecting the notion that God is a “craftsman” who “tinkers” with the world. According to Ratzinger, evolutionary change occurs “precisely in the processes of a living being” even as human beings are “not the mere product of development.” Finally, the emeritus pontiff insists that creation is an ever-present act that unfolds “in the manner in which thought is creative,” a dynamic that he describes variously as a story, drama, melody, and symphony. Wedding these and other key insights, this article submits that Ratzinger’s thought on evolution should lead us to conceive of creation less along the lines of an intelligently designed machine and more as a masterpiece story that is continually being told as its plot unfolds naturally over the course of time. (shrink)

The theories of Darwinian evolution and Intelligent Design appear to be locked in an intractable debate, partly because they offer rival scientific explanations for the phenomenon of descent with modification in biology. This paper analyses the dispute in two ways: firstly, it seeks to clarify the exact nature of the logical flaw that has been alleged to lie at the heart of Intelligent Design theory. Secondly, it proposes that, in spite of this error, the Intelligent Design theory advocated by Michael (...) Behe takes at least one significant step in the right direction. Although Behe's suggestion is promising, it is shown to be not nearly radical enough. (shrink)

Genes are often described by biologists using metaphors derived from computa- tional science: they are thought of as carriers of information, as being the equivalent of ‘‘blueprints’’ for the construction of organisms. Likewise, cells are often characterized as ‘‘factories’’ and organisms themselves become analogous to machines. Accordingly, when the human genome project was initially announced, the promise was that we would soon know how a human being is made, just as we know how to make airplanes and buildings. Impor- tantly, (...) modern proponents of Intelligent Design, the latest version of creationism, have exploited biologists’ use of the language of information and blueprints to make their spurious case, based on pseudoscientific concepts such as ‘‘irreducible complexity’’ and on flawed analogies between living cells and mechanical factories. However, the living organ- ism = machine analogy was criticized already by David Hume in his Dialogues Concerning Natural Religion. In line with Hume’s criticism, over the past several years a more nuanced and accurate understanding of what genes are and how they operate has emerged, ironically in part from the work of computational scientists who take biology, and in particular developmental biology, more seriously than some biologists seem to do. In this article we connect Hume’s original criticism of the living organism = machine analogy with the modern ID movement, and illustrate how the use of misleading and outdated metaphors in science can play into the hands of pseudoscientists. Thus, we argue that dropping the blueprint and similar metaphors will improve both the science of biology and its understanding by the general public. (shrink)

Paul Hoyningen-Huene argues that what makes scientific knowledge special is its systematic character, and that this can be used to solve the demarcation problem. He labels this STDC: “Systematicity Theory’s Demarcation Criterion.” This paper argues that STDC fails, because there are areas of intellectual activity that are highly systematic, but that the great majority of scientists and historians and philosophers of science do not accept as scientific. These include homepathy, creationism, and climate change denial. I designate these activities “facsimile sciences” (...) because they mimic the appearance of science but are not, by the standards of philosophers and scientists, scientific. This suggests that we need additional criteria to demarcate science from non-science and/ or nonsense. (shrink)

The explanatory filter is a proposed method to detect design in nature with the aim of refuting Darwinian evolution. The explanatory filter borrows its logical structure from the theory of statistical hypothesis testing but we argue that, when viewed within this context, the filter runs into serious trouble in any interesting biological application. Although the explanatory filter has been extensively criticized from many angles, we present the first rigorous criticism based on the theory of mathematical statistics.

Marcos Eberlin is a chemist and mass spectrometer who advances in a new book a refined Intelligent Design theory hinging on “foresight,” or the apparent teleology and purpose discernible in biological, chemical, and other complex life systems. Repurposing older ID arguments, such as those of “irreducible complexity,” and introducing new examples of phenomena pointed to by other ID theorists, Eberlin makes a strong argument for mindful creation by a “superintellect”. But is ID sufficient to answer Darwinism? Does “foresight” go far (...) enough in providing an alternative view of the origin of complex lifeforms? I argue that Eberlin, and other ID theorists, does not have a robust-enough definition of science to counter non-theistic theories of biology and biochemistry. An Aristotelian-Thomistic understanding of science allows us to go beyond the divide between ID and a-theistic theories and move the science-and-faith debate onto more solid ground. (shrink)

The fundamental constants that are involved in the laws of physics which describe our universe are finely-tuned for life, in the sense that if some of the constants had slightly different values life could not exist. Some people hold that this provides evidence for the existence of God. I will present a probabilistic version of this fine-tuning argument which is stronger than all other versions in the literature. Nevertheless, I will show that one can have reasonable opinions such that the (...) fine-tuning argument doesn’t lead to an increase in one’s probability for the existence of God. (shrink)

In the epistemology of disagreement literature an underdeveloped argument defending the claim that an agent need not conciliate when she becomes aware of epistemic peer disagreement is based on the idea that there are epistemic benefits to be gained from disagreement. Such benefits are unobtainable if an agent conciliates in the face of peer disagreement. I argue that there are good reasons to embrace this line of argument at least in inquiry-related contexts. In argumentation theory a deep disagreement occurs when (...) there is a disagreement between fundamental frameworks. According to Robert J. Fogelin disagreements between fundamental frameworks are not susceptible to rational resolution. Instead of evaluating this claim I argue that deep disagreements can lead to epistemic benefits, at least when inquiry is in view. Whether rational resolution is possible in cases of deep disagreements, their existence turns out to be epistemically beneficial. I conclude by examining whether this line of argument can be taken beyond research-related contexts.Dans la littérature sur l'épistémologie du désaccord, un argument sous-développé pour une approche non conciliatoire se fonde sur l'idée qu'il y a des bénéfices épistémiques à tirer du désaccord. De tels bénéfices sont impossibles à obtenir si un agent se concilie face au désaccord avec ses pairs, du moins dans les contextes liés à la recherche. Dans la théorie de l'argumentation, un désaccord profond se produit lorsqu'il y a un désaccord entre des propositions cadres. Je soutiens que des désaccords profonds peuvent mener à des avantages épistémiques, du moins dans le contexte de la recherche. Que la résolution rationnelle soit ou non possible en cas de désaccord profond, leur existence s'avère être bénéfique sur le plan épistémologique. (shrink)

Abstract. This paper examines the impact of two formalizations of evolutionary biology on the antiselectionist critiques of the Intelligent Design (ID) movement. It looks first at attempts to apply the syntactic framework of the physical sciences to biology in the twentieth century, and to their effect upon the ID movement. It then examines the more heuristic account of biological-theory structure, namely, the semantic model. Finally, it concludes by advocating the semantic conception and emphasizing the problems that the semantic model creates (...) for ID's negative and positive theses. (shrink)

The literature on the relationship between religion and belief in the paranormal is complex and sometimes seemingly contradictory. However, previous research suggests that this relationship depends on the religious characteristics of the sample and the measures of religion. Research also suggests that science knowledge is unrelated to paranormal beliefs, but critical thinking is at odds with paranormal beliefs. Psychology college students and conservative Christians answered questions about paranormal beliefs, religious beliefs, Bible knowledge, science knowledge, and evidence-based thinking. Conservative Christians displayed (...) the lowest belief in the paranormal. Religious beliefs and paranormal beliefs were unrelated, but attendance at services was negatively related to paranormal beliefs. Evidence-based thinking was also negatively related to paranormal beliefs. (shrink)

Recently, the Intelligent Design (ID) movement has challenged the claim of many in the scientific establishment that nature gives no empirical signs of having been deliberately designed. In particular, ID arguments in biology dispute the notion that neo-Darwinian evolution is the only viable scientific explanation of the origin of biological novelty, arguing that there are telltale signs of the activity of intelligence which can be recognized and studied empirically. In recent years, a number of Catholic philosophers, theologians, and scientists have (...) expressed opposition to ID. Some of these critics claim that there is a conflict between the philosophy of St. Thomas Aquinas and that of the ID movement, and even an affinity between Aquinas’s ideas and theistic Darwinism. We consider six such criticisms and find each wanting. (shrink)

“Intelligent Design” (ID) is a contemporary intellectual movement arguing that there is scientific evidence for the existence of some sort of creator. Its proponents see ID as a scientific research program and as a way to build a bridge between science and theology, while many critics see it merely as a repackaged form of religiously motivated creationism: both bad science and bad theology. In this article, I offer a close reading of the ID movement's critique of theistic evolutionism and argue (...) that this critique is ultimately in tension with the movement's broader thought. (shrink)

The article analyzes aspects of the relationship between evolution and biological complexity and the attempts made by scholars and theologians to interpret it within the limits of reductionist scientism or theism. For this purpose, firstly, attention is focused on explaining the meaning of the concept of "evolution" and its historical and philosophical transformation in the context of the idea of complexity. Secondly, the notion of complexity in theology is used as evidence to support teleology. This approach is criticized by some (...) scholars who consider evolution as a random prosses. They give it the status of a universal metaphysical assumption in evolution. The scientists and theologists both formulate metaphysical assumptions differently to interpret evolution. (shrink)

This paper examines our pre-theoretic conception of non-supernaturalism; the thesis that all that exists is natural. It is argued that we intuitively take this thesis to be a substantive, non-dogmatic, empirically justified, not merely contingent truth. However, devicing an interpretation of non-supernaturalism that captures all aspects of this intuition is difficult. Indeed, it is found that this intuition conflates the strong inferential scope of a metaphysical claim with the modest justificatory requirements of an empirical matter of fact. As such, non-supernaturalism, (...) in itspre-theoreticform, contains an internal tension that must be navigated whenever the thesis features in systematic thinking. (shrink)

Dissent is thought to play a valuable role in science, so that scientific communities ought to create opportunities for receiving critical feedback and take dissenting views seriously. There is concern, however, that some dissent does more harm than good. Dissent on climate change and evolutionary theory, for example, has confused the public, created doubt about existing consensus, derailed public policy, and forced scientists to devote resources to respond. Are there limits to the extent to which scientific communities have obligations to (...) seek and engage dissenting views? We consider the two main criteria that have been offered for what constitutes “normatively appropriate dissent” or the sort of dissent that ought to have the opportunity to be heard and taken seriously. Many have argued that dissenters must (1) engage in uptake of criticism against their own views and (2) share some standards for theory appraisal. We argue these criteria ultimately are unsuccessful. (shrink)