Matthew J. Barker, PhD
Associate Professor, Philosophy
On research sabbatical, January 1st 2022 - June 30th 2022

Education
PhD in philosophy, University of Wisconsin-Madison, with Elliott Sober (2007-2010)
MA in philosophy, University of Wisconsin-Madison (2007-2009)
MA in philosophy, University of Alberta, with Robert A. Wilson (2003-2005)
BA in philosophy, Lakehead University (1994-1998, 2003)
BSc in biology, Lakehead University (1994-1998)
Publications
Samples of published work
Published or forthcoming articles
-
We are Nearly Ready to Begin the Species Problem. In John S. Wilkins, Frank E. Zachos & Ya Igor Pavlinov (eds.), Species Problems and Beyond: Contemporary Issues in Philosophy and Practice, Routledge: Taylor & Francis Group. forthcoming.This paper isolates a hard, long-standing species problem: developing a comprehensive and exacting theory about the constitutive conditions of the species category, one that is accurate for most of the living world, and which vindicates the widespread view that the species category is of more theoretical import than categories such as genus, sub-species, paradivision, and stirp. The paper then uncovers flaws in several views that imply we have either already solved that hard species problem or d…Read moreThis paper isolates a hard, long-standing species problem: developing a comprehensive and exacting theory about the constitutive conditions of the species category, one that is accurate for most of the living world, and which vindicates the widespread view that the species category is of more theoretical import than categories such as genus, sub-species, paradivision, and stirp. The paper then uncovers flaws in several views that imply we have either already solved that hard species problem or dissolved it altogether – so-called We Are Done views. In doing so the paper offers new criticisms of the general lineage species concept (GLSC), evolutionary species concept (EvSC), biological species concept (BSC), other similar concepts, Ereshefsky’s eliminative pluralism about the species category, and both Mishler’s pessimism and Wilkins’ phenomenalism about that category. Opposed to We Are Done views, the paper argues for a Revving Up view, on which we are nearly ready to begin the hard species problem in earnest. To help work towards these conclusions, the paper begins with an outline of a new kind of view of species (Barker 2019a), which proposes they are feedback systems of a mathematically specifiable and empirically testable sort.
-
Biological Individuals. Stanford Encyclopedia of Philosophy 1 (1). 2019. With Robert A. Wilson.The impressive variation amongst biological individuals generates many complexities in addressing the simple-sounding question what is a biological individual? A distinction between evolutionary and physiological individuals is useful in thinking about biological individuals, as is attention to the kinds of groups, such as superorganisms and species, that have sometimes been thought of as biological individuals. More fully understanding the conceptual space that biological individuals occupy als…Read moreThe impressive variation amongst biological individuals generates many complexities in addressing the simple-sounding question what is a biological individual? A distinction between evolutionary and physiological individuals is useful in thinking about biological individuals, as is attention to the kinds of groups, such as superorganisms and species, that have sometimes been thought of as biological individuals. More fully understanding the conceptual space that biological individuals occupy also involves considering a range of other concepts, such as life, reproduction, and agency. There has been a focus in some recent discussions by both philosophers and biologists on how evolutionary individuals are created and regulated, as well as continuing work on the evolution of individuality.
-
Species and Other Evolving Lineages as Feedback Systems. Philosophy, Theory, and Practice in Biology 11. 2019.This paper proposes a new and testable view about the nature of species and other evolving lineages, according to which they are feedback systems. On this view, it is a mistake to think gene flow, niche sharing, and trait frequency similarities between populations are among variables that interact to cause some further downstream variable that distinguishes evolving lineages from each other, some sort of “species cohesion” for example. Instead, gene flow, niche sharing, similarities between popu…Read moreThis paper proposes a new and testable view about the nature of species and other evolving lineages, according to which they are feedback systems. On this view, it is a mistake to think gene flow, niche sharing, and trait frequency similarities between populations are among variables that interact to cause some further downstream variable that distinguishes evolving lineages from each other, some sort of “species cohesion” for example. Instead, gene flow, niche sharing, similarities between populations, and other causal variables feed into each other—instances of these at earlier times help cause instances of these same variables at later times. And any lineage-identifying cohesion just is the recurrence or cycling of these feedback relations within metapopulations over generations. Such cohesion can then be represented as variable M within multi-dimensional variable spaces, where values of M vary dynamically with the frequency and magnitude of feedback relations. Related conditions for being a species or other evolving lineage are then clarified. To argue for the development and testing of this view, the paper shows how it improves upon others.
-
Well-being, Disability, and Choosing Children. Mind 128 (510): 305-328. 2019. With Robert A. Wilson.The view that it is better for life to be created free of disability is pervasive in both common sense and philosophy. We cast doubt on this view by focusing on an influential line of thinking that manifests it. That thinking begins with a widely-discussed principle, Procreative Beneficence, and draws conclusions about parental choice and disability. After reconstructing two versions of this argument, we critique the first by exploring the relationship between different understandings of well…Read moreThe view that it is better for life to be created free of disability is pervasive in both common sense and philosophy. We cast doubt on this view by focusing on an influential line of thinking that manifests it. That thinking begins with a widely-discussed principle, Procreative Beneficence, and draws conclusions about parental choice and disability. After reconstructing two versions of this argument, we critique the first by exploring the relationship between different understandings of well-being and disability, and the second by more briefly focusing on the idea of a significant reason. By placing these results against the broader historical and ongoing contexts in which the lives of those with disabilities have been deemed of inferior quality, we conclude with a call for greater humility about disability and well-being in thought and practice.
-
Eliminative Pluralism and Integrative Alternatives: The Case of Species. British Journal for the Philosophy of Science 70 (3): 657-681. 2019.Pluralisms of various sorts are popular in philosophy of science, including those that imply some scientific concept x should be eliminated from science in favour of a plurality of concepts x1, x2, … xn. This article focuses on influential and representative arguments for such eliminative pluralism about the concept species. The main conclusions are that these arguments fail, that all other extant arguments also fail, and that this reveals a quite general dilemma, one that poses a defeasible pre…Read morePluralisms of various sorts are popular in philosophy of science, including those that imply some scientific concept x should be eliminated from science in favour of a plurality of concepts x1, x2, … xn. This article focuses on influential and representative arguments for such eliminative pluralism about the concept species. The main conclusions are that these arguments fail, that all other extant arguments also fail, and that this reveals a quite general dilemma, one that poses a defeasible presumption against many eliminative pluralisms about various scientific concepts. The article ends by outlining a novel integrative alternative in defence of species. 1) Introduction 2) The species Concept, the Category ‘Species’, and the ‘Species’ Category Problem 3) What Are Eliminative Pluralism about species, and the Arguments for It? 4) Evaluation of Arguments 4.1 Splitting? 4.2 Lumping? 4.3 The eliminative pluralist’s dilemma 5) More General Lessons6Species Cohesion: An Integrative Alternative7Conclusion
-
Environmentally Virtuous Agriculture: How and When External Goods and Humility Ethically Constrain (or Favour) Technology Use. Journal of Agricultural and Environmental Ethics 30 (2): 287-309. 2017. With Alana Lettner.This paper concerns virtue-based ethical principles that bear upon agricultural uses of technologies, such as GM crops and CRISPR crops. It does three things. First, it argues for a new type of virtue ethics approach to such cases. Typical virtue ethics principles are vague and unspecific. These are sometimes useful, but we show how to supplement them with more specific virtue ethics principles that are useful to people working in specific applied domains, where morally relevant domain-specific …Read moreThis paper concerns virtue-based ethical principles that bear upon agricultural uses of technologies, such as GM crops and CRISPR crops. It does three things. First, it argues for a new type of virtue ethics approach to such cases. Typical virtue ethics principles are vague and unspecific. These are sometimes useful, but we show how to supplement them with more specific virtue ethics principles that are useful to people working in specific applied domains, where morally relevant domain-specific conditions recur. We do this while still fulfilling the need for principles and associated practical reasoning to flexibly respect variation between cases. Second, with our more detailed approach we criticize and improve upon a commonly discussed principle about ecosystemic external goods that are crucial for human flourishing. We show this principle is far more conservative than appreciated, as it would prohibit many technology uses that are uncontroversially acceptable. We then replace this principle with two more specific ones. One identifies specific conditions in which ecosystem considerations are against a technology use, the other identifies favorable conditions. Third, we uncover a humility-based principle that operates within an influential “hubris argument” against uses of several biotechnologies in agriculture. These arguments lack a substantive theory of the nature of humility. We clarify such a theory, and then use it to replace the uncovered humility-based principle with our own more specific one that shifts focus from past moral failings, to current epistemic limits when deciding whether to support new technologies.
-
Connecting Applied and Theoretical Bayesian Epistemology: Data Relevance, Pragmatics, and the Legal Case of Sally Clark. Journal of Applied Philosophy 34 (2): 242-262. 2017.In this article applied and theoretical epistemologies benefit each other in a study of the British legal case of R. vs. Clark. Clark's first infant died at 11 weeks of age, in December 1996. About a year later, Clark had a second child. After that child died at eight weeks of age, Clark was tried for murdering both infants. Statisticians and philosophers have disputed how to apply Bayesian analyses to this case, and thereby arrived at different judgments about it. By dwelling on this applied ca…Read moreIn this article applied and theoretical epistemologies benefit each other in a study of the British legal case of R. vs. Clark. Clark's first infant died at 11 weeks of age, in December 1996. About a year later, Clark had a second child. After that child died at eight weeks of age, Clark was tried for murdering both infants. Statisticians and philosophers have disputed how to apply Bayesian analyses to this case, and thereby arrived at different judgments about it. By dwelling on this applied case, I make theoretical gains: clarifying and defending pragmatic principles of inference that are important for estimating key probabilities in a range of cases. Then, partly by drawing on such principles, and uncovering overlooked data on post-partum psychosis, I make applied gains: improving the rationality of judgments about the Sally Clark case in particular, judgments important to future similar cases.
-
Connecting Applied and Theoretical Bayesian Epistemology: Data Relevance, Pragmatics, and the Legal Case of Sally Clark. Journal of Applied Philosophy 34 (2): 242-262. 2017.In this article applied and theoretical epistemologies benefit each other in a study of the British legal case of R. vs. Clark. Clark's first infant died at 11 weeks of age, in December 1996. About a year later, Clark had a second child. After that child died at eight weeks of age, Clark was tried for murdering both infants. Statisticians and philosophers have disputed how to apply Bayesian analyses to this case, and thereby arrived at different judgments about it. By dwelling on this applied ca…Read moreIn this article applied and theoretical epistemologies benefit each other in a study of the British legal case of R. vs. Clark. Clark's first infant died at 11 weeks of age, in December 1996. About a year later, Clark had a second child. After that child died at eight weeks of age, Clark was tried for murdering both infants. Statisticians and philosophers have disputed how to apply Bayesian analyses to this case, and thereby arrived at different judgments about it. By dwelling on this applied case, I make theoretical gains: clarifying and defending pragmatic principles of inference that are important for estimating key probabilities in a range of cases. Then, partly by drawing on such principles, and uncovering overlooked data on post-partum psychosis, I make applied gains: improving the rationality of judgments about the Sally Clark case in particular, judgments important to future similar cases.
-
Science and Values. Eugenics Archive. 2015.This short paper, written for a wide audience, introduces "science and values" topics as they have arisen in the context of eugenics. The paper especially focuses on the context of 20th century eugenics in western Canada, where eugenic legislation in two provinces was not repealed until the 1970s and thousands of people were sterilized without their consent. A framework for understanding science-value relationships within this context is discussed, and so too is recent relevant work in philosoph…Read moreThis short paper, written for a wide audience, introduces "science and values" topics as they have arisen in the context of eugenics. The paper especially focuses on the context of 20th century eugenics in western Canada, where eugenic legislation in two provinces was not repealed until the 1970s and thousands of people were sterilized without their consent. A framework for understanding science-value relationships within this context is discussed, and so too is recent relevant work in philosophy of science.
-
Deep Conventionalism about Evolutionary Groups. Philosophy of Science 80 (5): 971-982. 2013. With Joel D. Velasco.We argue for a new conventionalism about many kinds of evolutionary groups, including clades, cohesive units, and populations. This rejects a consensus, which says that given any one of the many legitimate grouping concepts, only objective biological facts determine whether a collection is such a group. Surprisingly, being any one kind of evolutionary group typically depends on which of many incompatible values are taken by suppressed variables. This is a novel pluralism underlying most any one …Read moreWe argue for a new conventionalism about many kinds of evolutionary groups, including clades, cohesive units, and populations. This rejects a consensus, which says that given any one of the many legitimate grouping concepts, only objective biological facts determine whether a collection is such a group. Surprisingly, being any one kind of evolutionary group typically depends on which of many incompatible values are taken by suppressed variables. This is a novel pluralism underlying most any one group concept, rather than a familiar pluralism claiming many concepts are legitimate. Consequently, we must help biological facts determine grouphood, even when given a single grouping concept.
-
The Biological Notion of Individual. Stanford Encyclopedia of Philosophy. 2013. With Robert A. Wilson.Individuals are a prominent part of the biological world. Although biologists and philosophers of biology draw freely on the concept of an individual in articulating both widely accepted and more controversial claims, there has been little explicit work devoted to the biological notion of an individual itself. How should we think about biological individuals? What are the roles that biological individuals play in processes such as natural selection (are genes and groups also units of selection?)…Read moreIndividuals are a prominent part of the biological world. Although biologists and philosophers of biology draw freely on the concept of an individual in articulating both widely accepted and more controversial claims, there has been little explicit work devoted to the biological notion of an individual itself. How should we think about biological individuals? What are the roles that biological individuals play in processes such as natural selection (are genes and groups also units of selection?), speciation (are species individuals?), and organismic development (do genomes code for organisms)? Much of our discussion here will focus on organisms as a central kind of biological individual, and that discussion will raise broader questions about the nature of the biological world, for example, about its complexity, its organization, and its relation to human thought.
-
Essentialism. In Byron Kaldis (ed.), Encyclopedia of Philosophy and the Social Sciences, . 2013.This ~4000 word essay introduces topics of essentialism, as they arise in social sciences. It distinguishes empirical (e.g., psychological) from philosophical studies of essentialisms, and both metaphysical and scientific essentialisms within philosophy. Essentialism issues in social science are shown to be more subtle and complex than often presumed.
-
Biological explanations, realism, ontology, and categories. Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences 44 (4): 617-622. 2013.This is an extended review of John Dupré's _Processes of Life_, a collection of essays. It clarifies Dupré's concepts of reductionism and anti-reductionism, and critically examines his associated discussions of downward causation, and both the context sensitivity and multiple realization of categories. It reviews his naturalistic monism, and critically distinguishes between his realism about categories and constructivism about classification. Challenges to his process ontology are presented, as …Read moreThis is an extended review of John Dupré's _Processes of Life_, a collection of essays. It clarifies Dupré's concepts of reductionism and anti-reductionism, and critically examines his associated discussions of downward causation, and both the context sensitivity and multiple realization of categories. It reviews his naturalistic monism, and critically distinguishes between his realism about categories and constructivism about classification. Challenges to his process ontology are presented, as are arguments for his pluralism about scientific categories. None of his main conclusions are rejected; rather it is main arguments for them that are the focus.
-
Specious intrinsicalism. Philosophy of Science 77 (1): 73-91. 2010.Over the last 2,300 years or so, many philosophers have believed that species are individuated by essences that are at least in part intrinsic. Psychologists tell us most folks also believe this view. But most philosophers of biology have abandoned the view, in light of evolutionary conceptions of species. In defiance, Michael Devitt has attempted in this journal to resurrect a version of the view, which he calls Intrinsic Biological Essentialism. I show that his arguments for the resurrection f…Read moreOver the last 2,300 years or so, many philosophers have believed that species are individuated by essences that are at least in part intrinsic. Psychologists tell us most folks also believe this view. But most philosophers of biology have abandoned the view, in light of evolutionary conceptions of species. In defiance, Michael Devitt has attempted in this journal to resurrect a version of the view, which he calls Intrinsic Biological Essentialism. I show that his arguments for the resurrection fail, and I identify challenges that face anyone wishing to defend Intrinsic Biological Essentialism.
-
From Cognition's Location to the Epistemology of its Nature. Cognitive Systems Research 11 (357): 366. 2010.One of the liveliest debates about cognition concerns whether our cognition sometimes extends beyond our brains and bodies. One party says Yes, another No. This paper shows that debate between these parties has been epistemologically confused and requires reorienting. Both parties frequently appeal to empirical considerations and to extra-empirical theoretical virtues to support claims about where cognition is. These things should constrain their claims, but cannot do all the work hoped. This is…Read moreOne of the liveliest debates about cognition concerns whether our cognition sometimes extends beyond our brains and bodies. One party says Yes, another No. This paper shows that debate between these parties has been epistemologically confused and requires reorienting. Both parties frequently appeal to empirical considerations and to extra-empirical theoretical virtues to support claims about where cognition is. These things should constrain their claims, but cannot do all the work hoped. This is because of the overlooked fact, uncovered in this paper, that we could never distinguish the rival views empirically or by typical theoretical virtues. I show this by drawing on recent work on testing, predictive accuracy, and theoretical virtues. The recommendation to emerge is that we step back from debate about where cognition is, to the epistemology of what cognition is.
-
Cohesion, Gene flow, and the Nature of Species. Journal of Philosophy 107 (2): 59-77. 2010. With Robert A. Wilson.A far-reaching and influential view in evolutionary biology claims that species are cohesive units held together by gene flow. Biologists have recognized empirical problems facing this view; after sharpening the expression of the view, we present novel conceptual problems for it. At the heart of these problems is a distinction between two importantly different concepts of cohesion, what we call integrative and response cohesion. Acknowledging the distinction problematizes both the explanandum…Read moreA far-reaching and influential view in evolutionary biology claims that species are cohesive units held together by gene flow. Biologists have recognized empirical problems facing this view; after sharpening the expression of the view, we present novel conceptual problems for it. At the heart of these problems is a distinction between two importantly different concepts of cohesion, what we call integrative and response cohesion. Acknowledging the distinction problematizes both the explanandum of species cohesion and the explanans of gene flow that are central to the view we discuss. We conclude by tracing four broader implications for the study and conceptualization of species.
-
When Traditional Essentialism Fails: Biological Natural Kinds. Philosophical Topics 35 (1-2): 189-215. 2007. With Robert A. Wilson and Ingo Brigandt.Essentialism is widely regarded as a mistaken view of biological kinds, such as species. After recounting why (sections 2-3), we provide a brief survey of the chief responses to the “death of essentialism” in the philosophy of biology (section 4). We then develop one of these responses, the claim that biological kinds are homeostatic property clusters (sections 5-6) illustrating this view with several novel examples (section 7). Although this view was first expressed 20 years ago, and has receiv…Read moreEssentialism is widely regarded as a mistaken view of biological kinds, such as species. After recounting why (sections 2-3), we provide a brief survey of the chief responses to the “death of essentialism” in the philosophy of biology (section 4). We then develop one of these responses, the claim that biological kinds are homeostatic property clusters (sections 5-6) illustrating this view with several novel examples (section 7). Although this view was first expressed 20 years ago, and has received recent discussion and critique, it remains underdeveloped and is often misrepresented by its critics (section 8).
-
The empirical inadequacy of species cohesion by Gene flow. Philosophy of Science 74 (5): 654-665. 2007.This paper brings needed clarity to the influential view that species are cohesive entities held together by gene flow, and then develops an empirical argument against that view: Neglected data suggest gene flow is neither necessary nor sufficient for species cohesion. Implications are discussed. ‡I'm grateful to Rob Wilson, Alex Rueger and Lindley Darden for important comments on earlier drafts, and to Joseph Nagel, Heather Proctor, Ken Bond, members of the DC History and Philosophy of Biology …Read moreThis paper brings needed clarity to the influential view that species are cohesive entities held together by gene flow, and then develops an empirical argument against that view: Neglected data suggest gene flow is neither necessary nor sufficient for species cohesion. Implications are discussed. ‡I'm grateful to Rob Wilson, Alex Rueger and Lindley Darden for important comments on earlier drafts, and to Joseph Nagel, Heather Proctor, Ken Bond, members of the DC History and Philosophy of Biology reading group, and audience members at the November 2006 meeting of the PSA, for helpful comments or discussion. Social Sciences and Humanities Research Council of Canada fellowship 752-2005-1208 supported research. †To contact the author, please write to: Philosophy Department, University of Wisconsin–Madison, 5185 Helen C. White Hall, 600 North Park Street, Madison, WI 53706; e-mail: mjbarker2@wisc.edu.
Book reviews
-
Philip Cafaro, Thoreau's Living Ethics: Walden and the Pursuit of Virtue Reviewed by. Philosophy in Review 25 (2): 89-92. 2005.A three-page review of Philip Cafaro's book *Thoreau's Living Ethics*.
In progress / unpublished
-
Letter Regarding Canada's Bill C-7, Medical Assistance in Dying (MAID) and Disability. With Robert A. Wilson.This letter was submitted to the Senate Standing Committee on Legal and Constitutional Affairs, Government of Canada, on 29th January, 2021, as final debate over Bill C-7 was being undertaken in the Senate regarding MAiD and the strong opposition to the legislation expressed across the Canadian disability community. It draws on our individual and joint work on eugenics, well-being, and disability.
Research activities
Current research projects:
1. Norms of scientific classification: Are there ways in which we must, and others in which we should, draw upon norms rather than just data when defending theories about scientific categories--such as the categories species, planet, and skin cancer? With the help of RAs, Matt Slater and I are showing how the answer to these questions is 'yes'. And this helps steer us away from disagreements about whether scientific categories are objective, towards questions about which category claims are rational and in which ways. Work presented at CLMPS 2019 in Prague, and ISH 2019 in Oslo
2. Species and other evolving lineages as feedback systems: Having recently proposed that species and other evolving lineages are special kinds of feedback systems, I am now further developing this proposal, and its implications for many issues related to species, lineages, systematics, classification, and the philosophy of these. For a project proposal about applying the feedback model to prokaryotic species, in collaboration with microbial biologist Henrik Christensen and others, see here.
3. Startling implications about species: You are almost surely human, but is it possible that you may one day become something else, not human, and yet still be you? Do our best evolutionary theories about species even tell us what it is to be distinctively human? Is it possible that one and the same group of organisms could belong to two or more species at once? People recognized different species long before science began, so did later scientific theories clarify and improve upon the pre-scientific ones? Those four questions get very surprising answers, as this project uncovers overlooked implications of our best theories about evolutionary groups.
Recently completed projects:
1. Conservation biology and its values: Main aims of conservation biology include recommending good conservation strategies and policies. And what counts as good obviously depends on both empirical discoveries and what has or is deemed to have conservation value. But how should empirical matters and matters of value relate within the arguments that conservation biology proposes? Recently, Dylan Fraser and I discovered and documented different ways in which these matters are often misrelated within conservation arguments. We also recommended ways to help solve this problem, in order to strengthen conservation science and its arguments.
2. Beginning the species problem: Biology is often thought to have suffered the so-called "species problem" for a long time, perhaps centuries or even millennia. The problem is that the nature of the species category remains unclear. Many have thought this has urgent importance for both biological practice (e.g., taxonomy and species conservation) and theory (e.g., theories about evolution). But recently many species experts have instead suggested that the species problem has been either solved or dissolved, allowing us to move on from this impasse. In this recently completed project, to appear in a new volume of papers by species experts, I showed there is actually little reason to think the problem has been solved or dissolved, and that instead there are important senses in which we are just now beginning the problem in earnest. This is an optimistic take on the species problem, in contrast to the usual cynical ones.
3. Well-being and disability: When people are planning to have a child and can select between different embryos, do they have a significant moral reason (one to weigh up against their other reasons) to select against embryos that are predicted to develop into children with recognized disabilities? It is common to answer Yes, but we analyzed different types of well-being in order to show that the prevailing case for such selection against disability is mistaken, and reflects an overlooked kind of hubris that tacitly privileges lives that are most like our own. (With Rob Wilson.)
4. Environmental virtue ethics and humility: One strand of this work showed that, on one hand, environment-regarding character traits are not strictly required for human flourishing, but then, on the other hand, examined the links between diversity of environments and diversity of human populations to show that some environment-regarding character traits are nonetheless of great ethical importance for human flourishing. Another strand of this work asked: can an approach to ethics based on virtuous human character traits and well-being offer clear and specific principles for deciding how to use biotechnology in agriculture? Alana Friend Letter and I argued that it can, by generating principles based in both humility and ecosystem sustainability, also illustrating the use of these principles in GMO and CRISPR crop cases.
5. Integrating pluralism about species and other scientific categories: Rather than there being just one legitimate theory about the nature of species, is there a plurality of theories that are equally legitimate even though they contradict each other? For several years it has been very fashionable to answer Yes, and to use this as an example of how a happy, ecumenical pluralism is common in the sciences. Authors have drawn upon this to help argue for sweeping conclusions about how science should be governed and organized. My project challenged the main case for eliminative species pluralism, and argued that a dilemma faces such pluralism in many cases of scientific categories.
6. Bayesian epistemology and the Sally Clark double murder case: How can theoretical and applied philosophy inform each other? To elaborate interesting ways in which the two are reinforcing, this work joined debate about applying Bayesian epistemology to the famous legal case of Sally Clark. When Clark’s first baby died, this was blamed on SIDS. But when she had another baby and it also died, Clark was charged with double murder. In the now famous ensuing court case, a statistician testified that the probability of double SIDS was astronomically low. Others have disagreed and claimed that the chance of double murder was even lower. By drawing on theoretical Bayesianism, my work reached the applied conclusion that both sides are mistaken – the two probabilities are roughly equal, and the relevance of post-partum psychosis in this case has been overlooked. The work also reached a more theoretical conclusion – it generated a new general principle for how to infer prior probabilities from frequency data in a wide variety of cases.
Planned future projects:
1. More on conservation biology and its values: Dylan Fraser and I recently uncovered and detailed the Unravelled Rope Problem in conservation biology. This means arguments in conservation often misrelate empirical matters and matters of value, so that the arguments don't support their conclusions as planned. In the future we plan to quantify the ways in which this problem arises, to document a more exacting account of the problem and inform how to overcome it.
2. The nature of humility. Since ancient times people have written about and praised the character trait of humility, but what is it exactly? This project develops a hypothesis about humility's nature, one that integrates recent empirical studies. The hypothesis is that humility is the interaction of two dispositions: being disposed to and motivated by unabsorbed and reasonable views of one's self, and being disposed to selflessly take the bigger picture of things into account. This project outlines means of empirically testing this hypothesis and argues that if the hypothesis is correct, then we should think humility is a virtue that strengthens rather than weakens people. (Work presented with James Luong at a May 2019 CRÉ/GREE conference)
3. Robert Boyle’s metaphysics of science: Was the 17th century scientist Robert Boyle the archetypal reductionist and mechanist that historians and others often describe? I plan to show he was not, that his views about the nature of matter and explanation were more nuanced than has been appreciated, and that we have much to learn from this today.
4. Race, realism, and Bayesian genetics: Should we believe that data analysis using Bayesian statistical software provides evidence that human races are biologically real, as many authors have claimed when criticizing decades of anti-realism about race? I plan to clarify the potential and limits of such analyses, and improve debate about the biological reality of races and other groups.
5. History of species: Were taxonomists prior to Darwin as mistaken in their views of species and other taxa as many traditional historians have long claimed, or were their views much closer to our contemporary ones, as some history revisionists have recently argued? I plan to show that both the traditionalists and revisionists are partly correct and partly incorrect – that it has been a mistake to couch the debate in terms of “species essentialism” and that upon getting more fine-grained in our comparisons of pre- and post-Darwinian taxonomy, we see more clearly how some things have changed and how others have stayed the same.
Online presentations and commentaries
Presentation about CRISPR and editing the human germ line, as part of a panel on these topics. https://www.youtube.com/watch?v=ZndxuwSCWBY&t=3193s
Commentary on Mark Vellend's presentation about values and bias in conservation biology. https://www.youtube.com/watch?v=CnVXIHM5H2I
Commentary on Elliott Sober's presentation on the topic of "science and values". https://www.youtube.com/watch?v=4Vjt0SgzHIk
Research Networks:
Teaching and supervision activities
Courses taught (undergraduate and graduate level):
- Philosophical Foundations of Biology, PHIL 441/641 & BIOL 421 (cross-listed in the Department of Biology), recently offered once/year; a past syllabus (outline)
- Advanced Philosophy of Science, PHIL 420/644, offered about every other year; a past syllabus (outline)
- Philosophy of Biology, PHIL 318, offered in many years; a past syllabus (outline)
- Philosophy of Social Sciences, PHIL 324, offered now and then; a past syllabus (outline)
- Introduction to Philosophy of Science, PHIL 220, usually offered once/year; a past syllabus (outline)
Current or Recent Research Assistant(s):
Graduate students supervised:
-
Some comments from Laura on her time in the MA program: "In addition to being a kind and supportive presence, Matt is an organized and careful supervisor. His feedback on my MRP helped me to think more deeply and pressed me to refine my points in ways that facilitated my learning while improving the clarity of my work. Matt’s guidance has helped me become more precise with language, which has ultimately allowed me to communicate more effectively with others. The refinement of my communication skills through my work with Matt has become particularly useful for me as I am currently beginning graduate studies in Counselling Psychology at McGill University."
- Some comments from Sean from his time in the MA program: "Dr. Matt Barker’s expertise and insights were invaluable to me when deciding what topic in philosophy of science to write on. He demonstrated unparalleled support for me as his graduate student by continuing to provide weekly feedback on drafts of my research paper, while being away on parental leave. Additionally, he arranged introductions for me with members within his academic circle. For example, he introduced me to Dr. Ingo Brigandt, who agreed to review a draft of my paper and provide detailed comments. This greatly benefited not only my final research paper, but also my future potential research opportunities. Incidentally, during this time, I was able to secure a research stay in Edmonton, Alberta, under Dr. Brigandt’s supervision, and expand my own academic networks while receiving additional feedback and comments, further strengthening the final version of my research paper."
-
Some comments from Louise from her time in the MA program: "Professor Barker's spontaneous enthusiasm for the fantastic short story "Axolotl" and his recognition of its potential for an analytic enquiry encouraged me to pursue the rather nebulous goal of using philosophy of science to foster cooperation between the hard sciences and the humanities. His persistent and perfectly orchestrated crescendo of questions over three years enabled me to grow from a well-intentioned sympathiser of things philosophical in general to a dedicated student of personal identity and metaphysical boundaries. His sustained guidance and personalised involvement throughout this lengthy process have given me a unique sense of accomplishment and the impetus to pursue further studies in philosophy. I am currently researching the ethical facets of end of life situations including MAiD."
- Some comments from Dan on his time in the MA program: "In addition to the knowledge I developed about my subject area (environmental virtue ethics), I would say that the most lasting and important lessons I learned from studying with Dr. Barker were less directly related to my specific area of study, and more applicable to my writing and critical thinking skills in general. I learned to be a far more disciplined writer than I was before, and this was very valuable in the workplace, where I found myself in a management role where clear and concise communications skills are paramount. Additionally, Dr. Barker's thoroughly analytical approach to philosophy taught me how to break down problems in order to solve them once piece at a time... Surprisingly, what works for a graduate research paper also works surprisingly well for nearly any other planning exercise, and getting through my studies with Dr. Barker gave me confidence to work on large organizational projects when I joined the work force"
- Some comments from Fred on his time in the MA program: "My work with Drs. Barker and Morris at Concordia helped me align and clarify my thoughts on cognitive science, and helped prepare me to undertake (and get admitted for) an interdisciplinary Ph.D. at the University of Manitoba"