Phylogenetic trees are a crucial backbone for a wide breadth of biological research spanning systematics, organismal biology, ecology, and medicine. In 2015, the Open Tree of Life project published a first draft of a comprehensive tree of life, summarizing digitally available taxonomic and phylogenetic knowledge. This paper reviews, investigates, and addresses the following questions as a follow-up to that paper, from the perspective of researchers involved in building this summary of the tree of life: Is there a tree of life (...) and should we reconstruct it? Is available data sufficient to reconstruct the tree of life? Do we have access to phylogenetic inferences in usable form? Can we combine different phylogenetic estimates across the tree of life? And finally, what is the future of understanding the tree of life? A schematic of the process of building a unified tree of life. Inputs are published phylogenetic estimates and a unified taxonomy. These inputs are combined into a summary supertree containing ≈2 million taxa. The relationships among any subset of taxa may easily be accessed and used in downstream analyses. (shrink)

In this article I defend a new argument against moralist theories of legitimacy and in favour of realist theories. Moralist theories, I argue, are vulnerable to ideological and wishful thinking because they do not connect the demands of legitimacy with the interests of rulers. Realist theories, however, generally do manage to make this connection. This is because satisfying the usual realist criteria for legitimacy – the creation of a stable political order that transcends brute coercion – is usually necessary for (...) rulers to preserve their rule. (shrink)

In this article I defend a new argument against moralist theories of legitimacy and in favour of realist theories. Moralist theories, I argue, are vulnerable to ideological and wishful thinking because they do not connect the demands of legitimacy with the interests of rulers. Realist theories, however, generally do manage to make this connection. This is because satisfying the usual realist criteria for legitimacy – the creation of a stable political order that transcends brute coercion – is usually necessary for (...) rulers to preserve their rule. (shrink)

In the nineteenth century, astronomers thought that a planet between Mercury and the Sun was causing perturbations in the orbit of Mercury, and they introduced ‘Vulcan’ as a name for such a planet. But they were wrong: there was, and is, no intra-Mercurial planet. Still, these astronomers went around saying things like (2) Vulcan is a planet between Mercury and the Sun. Some philosophers think that, when nineteenth-century astronomers were theorizing about an intra-Mercurial planet, they created a hypothetical planet.

Accoding to G.E. Moore, something''s intrinsic valuedepends solely on its intrinsic nature. Recently Thomas Hurka andShelly Kagan have argued, contra Moore, that something''s intrinsic valuemay depend on its extrinsic properties. Call this view the ConditionalView of intrinsic value. In this paper I demonstrate how a Mooreancan account for purported counterexamples given by Hurka and Kagan. I thenargue that certain organic unities pose difficulties for the ConditionalView.

Sometimes people desire that their lives go badly, take pleasure in their lives going badly, or believe that their lives are going badly. As a result, some popular theories of welfare are paradoxical. I show that no attempt to defend those theories from the paradox fully succeeds.

Many political realists reject the idea that the first task for political philosophy is to justify the existence of coercive political institutions. Instead, they say, we should begin with the factual existence of CPIs, and ask how they ought to be structured. In holding this view, they adopt a form of political naturalism that is broadly Aristotelian in character. In this article, I distinguish between two forms that this political naturalism might take - what I call a ‘strong’ form, and (...) a ‘weak’ form - and argue that both ought to be rejected. (shrink)

David Benatar argues that creating someone always harms them. I argue that his master argument rests on a conceptual incoherence.

This paper examines the implications of the context-sensitivity of counterfactuals for the correctness of emotions and attitudes towards death. I argue that the correctness of an attitude such as fear must be explained by appeal to its causal relations to certain preferences.

Most realist theories of legitimacy are internalist theories, meaning that they regard legitimacy as a function of how subjects view their own rulers. However, some realists seek to qualify their internalism by holding that legitimacy is not simply a matter of whether subjects accept their rulers’ exercise of power. According to one such view, legitimacy requires that rulers’ power be ‘acceptable’ to subjects, in the sense that it can be justified on the basis of values that they accept. Call this (...) acceptability internalism. In this article, I argue that realists should reject acceptability internalism. I first argue that acceptability internalism has the disadvantage of separating the concept of legitimacy from the interests of rulers. I then consider two arguments in favour of acceptability internalism, and argue that both should be rejected. (shrink)

I review the book “Making Prehistory: Historical Science and the Scientific Realism Debate” by Derek Turner. Turner suggests that philosophers should take seriously the historical sciences such as geology when considering philosophy of science issues. To that end, he explores the scientific realism debate with the historical sciences in mind. His conclusion is a view allied to that of Arthur Fine: a view Turner calls the natural historical attitude. While I find Turner’s motivations good, I find his characterisation of the (...) historical sciences unconvincing. I say why in a section at the end of the review. The result is that I am unpersuaded by his thesis. (shrink)

We revisit the foundations of positive model theory, introducing h-inductive sentences. These allow a considerably simplified presentation of positive model theory, as well as a characterisation of Hausdorff cats by an amalgamation property of their h-inductive theory.

Difficulties understanding speech form one of the most prevalent complaints among older adults. Successful speech perception depends on top-down linguistic and cognitive processes that interact with the bottom-up sensory processing of the incoming acoustic information. The relative roles of these processes in age-related difficulties in speech perception, especially when listening conditions are not ideal, are still unclear. In the current study, we asked whether older adults with a larger working memory capacity process speech more efficiently than peers with lower capacity (...) when speech is presented in noise, with another task performed in tandem. Using the Eye-tracking of Word Identification in Noise Under Memory Increased Load an adapted version of the “visual world” paradigm, 36 older listeners were asked to follow spoken instructions presented in background noise, while retaining digits for later recall under low or high memory load. In critical trials, instructions directed listeners’ gaze to pictures of objects whose names shared onset or offset sounds with the name of a competitor that was displayed on the screen at the same time. We compared listeners with different memory capacities on the time course for spoken word recognition under the two memory loads by testing eye-fixations on a named object, relative to fixations on an object whose name shared phonology with the named object. Results indicated two trends. For older adults with lower working memory capacity, increased memory load did not affect online speech processing, however, it impaired offline word recognition accuracy. The reverse pattern was observed for older adults with higher working memory capacity: increased task difficulty significantly decreases online speech processing efficiency but had no effect on offline word recognition accuracy. Results suggest that in older adults, adaptation to adverse listening conditions is at least partially supported by cognitive reserve. Therefore, additional cognitive capacity may lead to greater resilience of older listeners to adverse listening conditions. The differential effects documented by eye movements and accuracy highlight the importance of using both online and offline measures of speech processing to explore age-related changes in speech perception. (shrink)

In “Tropes and Ordinary Physical Objects”, Kris McDaniel argues that ordinary physical objects are fusions of monadic and polyadic tropes. McDaniel calls his view “TOPO”—for “Theory of Ordinary Physical Objects”. He argues that we should accept TOPO because of the philosophical work that it allows us to do. Among other things, TOPO is supposed to allow endurantists to reply to Mark Heller’s argument for perdurantism. But, we argue in this paper, TOPO does not help endurantists do that; indeed, we argue (...) that anyone who accepts TOPO should reject endurantism. (shrink)

I develop a formal logic in which quantified arguments occur in argument positions of predicates. This logic also incorporates negative predication, anaphora and converse relation terms, namely, additional syntactic features of natural language. In these and additional respects, it represents the logic of natural language more adequately than does any version of Frege’s Predicate Calculus. I first introduce the system’s main ideas and familiarize it by means of translations of natural language sentences. I then develop a formal system built on (...) these principles, the Quantified Argument Calculus or Quarc. I provide a truth-value assignment semantics and a proof system for the Quarc. I next demonstrate the system’s power by a variety of proofs; I prove its soundness; and I comment on its completeness. I then extend the system to modal logic, again providing a proof system and a truth-value assignment semantics. I proceed to show how the Quarc versions of the Barcan formulas, of their converses and of necessary existence come out straightforwardly invalid, which I argue is an advantage of the modal Quarc over modal Predicate Logic as a system intended to capture the logic of natural language. (shrink)

Millianism and Fregeanism agree that a sentence that contains a name expresses a structured proposition but disagree about whether that proposition contains the object that the name refers to (Millianism) or rather a mode of presentation of that object (Fregeanism). Various problems – about simple sentences, propositional‐attitude ascriptions, and sentences that contain empty names – beset each view. To solve these problems, Millianism can appeal to modes of presentation, and Fregeanism can appeal to objects. But this raises a further problem: (...) namely, to explain why the proposition expressed by a sentence that contains a name matters in some cases but not in others. (shrink)

This chapter discusses the metaphysical view referred to by Harry Silverstein as “four-dimensionalism,” but referred to in this chapter as “eternalism.” In contrast to presentism, eternalism posits that purely past and purely future objects and events exist. If a person goes out of existence at the moment of death, the problem arises as to how death is bad for its victim. According to Silverstein, this problem arises from the truth of the “Values Connect with Feelings” thesis, according to which it (...) must be possible for someone to have feelings about a thing in order for that thing to be bad for that person. The badness of death may entail eternalism, but it is for an entirely different reason. Eternalism must be true in order for there to be a time at which death is bad for its victim. These two conflicting views are discussed in this chapter. (shrink)

The ‘consensus’ model of public reason, associated with John Rawls’s political liberalism, has been criticised for excluding certain reasons from receiving consideration where the justification of the constitutional essentials is concerned. One limitation of these criticisms is that they typically focus on the exclusion of reasons political liberals are committed to excluding, notably reasons based on religious and comprehensive views. I argue that public reason excludes some reasons, central to the interests of many oppressed groups, that public reason advocates will (...) agree should not be excluded.L’idée de raison publique comme «consensus», associée au libéralisme politique de John Rawls, a été attaquée du fait de sa supposée incapacité à permettre la prise en compte de certaines raisons dans les cas où la substance même de la constitution est en question. Une limitation de ces critiques est qu’elles se concentrent habituellement sur l’exclusion de ces raisons que les libéraux eux-mêmes s’efforcent d’exclure, en particulier des raisons fondées sur des vues globales ou religieuses. Je défends l’idée selon laquelle la raison publique exclut de fait certaines raisons, essentielles aux intérêts de nombreux groupes opprimés, que les tenants de la raison publique eux-mêmes considèreraient ne pas devoir être exclues. (shrink)

Most philosophers seem to think that argument expression is not normally a form of intolerance. Call this the ‘argument-friendly view’ of intolerance. In this article, I argue that the case for the argument-friendly view is much weaker than commonly thought. I consider three possible arguments for the argument-friendly view and conclude that all three fail. This leaves us with a choice: either reject the argument-friendly view, or accept it as a feature of the concept of tolerance which has no rational (...) basis apart from our everyday usage of the term. (shrink)

in Values and Morals, eds. Alvin Goldman and Jaegwon Kim (Reidel, 1978), pp. 186-214.

Contemporary public debates about global climate change may be usefully understood as debates on the epistemology of expertise. The scope of this essay is to offer an overview of significant epistemic challenges facing climate experts and those with whom they are epistemically interdependent, with attention to the implications of various accounts of expertise, trust, and credibility for practical and social issues raised in contemporary public debates about climate change.

Volume 46, Issue 1, March 2019, Page 111-114.

This chapter contains sections titled: It Ain't Fast Food! We Are What We Eat Notes.

This paper criticizes Kripke’s and Putnam’s theory of the semantics of natural kind terms (KPT) and develops an alternative theory. It first examines description theories of natural kind terms, to see what their flaws are and what can be preserved of them. It then presents the KPT and makes three main criticisms. These rely on the meaning of elementary particles’ names, on reactions to the absence of a common essential nature, and on applications of old terms to new cases. Lastly, (...) it develops a theory that takes noun phrases to be plural referring expressions, and shows how that theory meets the objections to the KPT. (shrink)