We argue that by neglecting the fact that procedural memory may also have episodic qualities, and by considering only a systems approach to memory, Walker's account of consolidation of learning during subsequent sleep ignores alternative accounts of how sleep stages may be interdependent. We also question the proposition that sleep-based consolidation largely bypasses hippocampal structures.

The power of the application of bioinformatics across multiple publicly available transcriptomic data sets was explored. Using 19 human and mouse circadian transcriptomic data sets, we found that NR1D1 and NR1D2 which encode heme‐responsive nuclear receptors are the most rhythmic transcripts across sleep conditions and tissues suggesting that they are at the core of circadian rhythm generation. Analyzes of human transcriptomic data show that a core set of transcripts related to processes including immune function, glucocorticoid signalling, and lipid metabolism is (...) rhythmically expressed independently of the sleep‐wake cycle. We also identify key transcripts associated with transcription and translation that are disrupted by sleep manipulations, and through network analysis identify putative mechanisms underlying the adverse health outcomes associated with sleep disruption, such as diabetes and cancer. Comparative bioinformatics applied to existing and future data sets will be a powerful tool for the identification of core circadian‐ and sleep‐dependent molecules. (shrink)

Most people assume that, even though some degenerative or criminal behavior may be caused by influences beyond our control, ordinary human actions are not similarly generated, but rather are freely chosen, and we can be praiseworthy or blameworthy for them. A less popular and more radical claim is that factors beyond our control produce all of the actions we perform. It is this hard determinist stance that Derk Pereboom articulates in Living Without Free Will. Pereboom argues that our best (...) scientific theories have the consequence that factors beyond our control produce all of the actions we perform, and that because of this, we are not morally responsible for any of them. He seeks to defend the view that morality, meaning and value remain intact even if we are not morally responsible, and furthermore, that adopting this perspective would provide significant benefit for our lives. (shrink)

In this book, Derk Pereboom explores how physicalism might best be formulated and defended against the best anti-physicalist arguments. Two responses to the knowledge and conceivability arguments are set out and developed. The first exploits the open possibility that introspective representations fail to represent mental properties as they are in themselves; specifically, that introspection represents phenomenal properties as having certain characteristic qualitative natures, which these properties might actually lack. The second response draws on the proposal that currently unknown fundamental (...) intrinsic properties provide categorical bases for known physical properties and would also yield an account of consciousness. While there are non-physicalist versions of this position, some are amenable to physicalism. The book's third theme is a defense of a nonreductive account of physicalism. The type of nonreductivism endorsed departs from others in that it rejects all token identity claims for psychological and microphysical entities. The deepest relation between the mental and the microphysical is constitution, where this relation is not to be explicated by the notion of identity. (shrink)

Higher-order logic, with its type-theoretic apparatus known as the simple theory of types (STT), has increasingly come to be employed in theorizing about properties, relations, and states of affairs—or ‘intensional entities’ for short. This paper argues against this employment of STT and offers an alternative: ordinal type theory (OTT). Very roughly, STT and OTT can be regarded as complementary simplifications of the ‘ramified theory of types’ outlined in the Introduction to Principia Mathematica (on a realist reading). While STT, understood as (...) a theory of intensional entities, retains the Fregean division of properties and relations into a multiplicity of categories according to their adicities and ‘input types’ and discards the division of intensional entities into different ‘orders’, OTT takes the opposite approach: it retains the hierarchy of orders (though with some modifications) and discards the categorisation of properties and relations according to their adicities and input types. In contrast to STT, this latter approach avoids intensional counterparts of the Epimenides and related paradoxes. Fundamental intensional entities lie at the base of the proposed hierarchy and are also given a prominent part to play in the individuation of non-fundamental intensional entities. (shrink)

I defend the proposal that certain forms of work—specifically forms that are socially necessary but involve the imposition of considerable burdens—be shared between citizens. I argue that sharing burdensome work would achieve several goals, including a more equal distribution of the benefits and burdens of work, a greater appreciation of each other's labour contributions, and an amelioration of problematic inequalities of status. I conclude by considering three objections: that sharing burdensome work would (1) involve morally unacceptable constraints on freedom, (2) (...) be prohibitively inefficient, and (3) forbid mutually advantageous trades. I argue that none of these objections succeed. (shrink)

This paper clarifies Merleau-Ponty’s original account of “higher-order” cognition as fundamentally embodied and enacted. Merleau-Ponty’s philosophy inspired theories that deemphasize overlaps between conceptual knowledge and motor intentionality or, on the contrary, focus exclusively on abstract thought. In contrast, this paper explores the link between Merleau-Ponty’s account of motor intentionality and his interpretations of our capacity to understand and interact productively with cultural symbolic systems. I develop my interpretation based on Merleau-Ponty’s analysis of two neuropathological modifications of motor intentionality, the case (...) of the brain-injured war veteran Schneider, and a neurological disorder known as Gerstmann’s syndrome. Building on my analysis of Schneider’s sensorimotor compensatory performances in relation to his limitations in the domains of algebra, geometry, and language usage, I demonstrate a strong continuity between the sense of embodiment and enaction at all these levels. Based on Merleau-Ponty’s interpretations, I argue that “higher-order” cognition is impaired in Schneider insofar as his injury limits his sensorimotor capacity to dynamically produce comparatively more complex differentiations of any given phenomenal structure. I then show how Merleau-Ponty develops and specifies his interpretation of Schneider’s intellectual difficulties in relation to the ambiguous role of the body, and in particular the hand, in Gerstmann’s syndrome. I explain how Merleau-Ponty defends the idea that sensorimotor and quasi-representational cognition are mutually irreducible, while maintaining that symbol-based cognition is a fundamentally enactive and embodied process. (shrink)

Wrongdoing and the Moral Emotions provides an account of how we might effectively address wrongdoing given challenges to the legitimacy of anger and retribution that arise from ethical considerations and from concerns about free will. The issue is introduced in Chapter 1. Chapter 2 asks how we might conceive of blame without retribution, and proposes an account of blame as moral protest, whose function is to secure forward-looking goals such as the moral reform of the wrongdoer and reconciliation in relationships. (...) Chapter 3 considers whether it's possible to justify effectively dealing those who pose dangerous threats if they do not deserve to be harmed, and contends that wrongfully posing a threat is the core condition for the legitimacy of defensive harming. Chapter 4 provides an account of how to treat criminals without a retributive justification for punishment, and argues for an account in which the right of self-defense provides justification for measures such as preventative detention. Chapter 5 considers how we might forgive if wrongdoers don't basically deserve the pain of being resented, which forgiveness would then renounce, and proposes that forgiveness be conceived instead as renunciation of the stance of moral protest. Chapter 6 considers how personal relationships might function without retributive anger having a role in responding to wrongdoing, and contends that the stance of moral protest, supplemented with non-retributive emotions, is sufficient. Chapter 7 surveys the options for theistic and atheistic attitudes regarding the fate of humanity in a deterministic universe, and defends an impartial hope for humanity. (shrink)

Should Marxists support universal basic income (UBI), i.e., a regular cash income paid to all without a means test or work requirement? This paper considers one important argument that they should, namely that UBI would be instrumentally effective in helping to bring about communism. It argues that previous answers to this question have paid insufficient attention to a logically prior question: what is Marx’s account of communism? In reply, it distinguishes two different accounts: a left-libertarian version that associates communism with (...) the freedom to live and work how one wants, and a perfectionist version that associates communism with the overcoming of alienated labour and self-realisation in work. It argues that UBI would make steps towards the left-libertarian account but not the perfectionist account. Ultimately, then, the question “should Marxists support basic income?” is shown to partly depend on which account of communism Marxists want to bring about. (shrink)

This paper features Derk Pereboom’s replies to commentaries by Victor Tadros and Saul Smilansky on his non-retributive, incapacitation-focused proposal for treatment of dangerous criminals; by Michael McKenna on his manipulation argument against compatibilism about basic desert and causal determination; and by Alfred R. Mele on his disappearing agent argument against event-causal libertarianism.

This paper makes the case for a sharper terminology regarding AIs cognitive abilities. In arguing that thinking requires more than content production, I offer a definition of meaning drawing on a clear distinction between living and machine intelligence. A pivotal argument is the re-use of the Turing Test (TT) for understanding which theories of meaning and consciousness are no longer plausible—because they have been reproduced by software without thereby gaining conscious experience. In following the few theories that have not (yet) (...) failed this reversed Turing Test (RTT), the focus turns towards rethinking the human condition in times of AI along the lines of three questions: What if a machine developed consciousness? What if AI proceeded without developing a consciousness? What, if machinic and human intelligence merged? These three questions in the end lead to examining three related possible futures of humanism as now determined by the relation between Human Intelligence and AI. (shrink)

As philosophical and scientific arguments for free will skepticism continue to gain traction, we are likely to see a fundamental shift in the way people think about free will and moral responsibility. Such shifts raise important practical and existential concerns: What if we came to disbelieve in free will? What would this mean for our interpersonal relationships, society, morality, meaning, and the law? What would it do to our standing as human beings? Would it cause nihilism and despair as some (...) maintain or would it rather have a humanizing effect on our practices and policies, freeing us from the negative effects of belief in free will? In this chapter we consider the practical implications of free will skepticism and argue that life without free will and basic desert moral responsibility would not be as destructive as many people believe. We argue that prospects of finding meaning in life or of sustaining good interpersonal relationships, for example, would not be threatened. On treatment of criminals, we argue that although retributivism and severe punishment, such as the death penalty, would be ruled out, preventive detention and rehabilitation programs would still be justified. While we will touch on all these issues below, our focus will be primarily on this last issue. -/- We begin in section I by considering two different routes to free will skepticism. The first denies the causal efficacy of the types of willing required for free will and receives its contemporary impetus from pioneering work in neuroscience by Benjamin Libet, Daniel Wegner, and John-Dylan Haynes. The second, which is more common in the philosophical literature, does not deny the causal efficacy of the will but instead claims that whether this causal efficacy is deterministic or indeterministic, it does not achieve the level of control to count as free will by the standards of the historical debate. We argue that while there are compelling objections to the first route—e.g., Al Mele (2009), Eddy Nahmias (2002, 2011), and Neil Levy (2005)—the second route to free will skepticism remains intact. In section II we argue that free will skepticism allows for a workable morality, and, rather than negatively impacting our personal relationships and meaning in life, may well improve our well-being and our relationships to others since it would tend to eradicate an often destructive form of moral anger. In section III we argue that free will skepticism allows for adequate ways of responding to criminal behavior—in particular, incapacitation, rehabilitation, and alternation of relevant social conditions—and that these methods are both morally justified and sufficient for good social policy. We present and defend our own preferred model for dealing with dangerous criminals, an incapacitation account built on the right to self-protection analogous to the justification for quarantine (see Pereboom 2001, 2013, 2014a; Caruso 2016a), and we respond to recent objections to it by Michael Corrado and John Lemos. (shrink)

There is unanimous agreement that Nāgārjuna (ca 150–250 AD) is the most important Buddhist philosopher after the historical Buddha himself and one of the most original and influential thinkers in the history of Indian philosophy. His philosophy of the “middle way” (madhyamaka) based around the central notion of “emptiness” (śūnyatā) influenced the Indian philosophical debate for a thousand years after his death; with the spread of Buddhism to Tibet, China, Japan and other Asian countries the writings of Nāgārjuna became an (...) indispensable point of reference for their own philosophical inquiries. A specific reading of Nāgārjuna's thought, called Prāsaṅgika-Madhyamaka, became the official philosophical position of Tibetan Buddhism which regards it as the pinnacle of philosophical sophistication up to the present day. (shrink)

The article starts from the questions: what is it to be an inhabitant or citizen of a globalised world, and how are we to think of education in relation to such inhabitants? We examine more specifically the so–called ‘European area of higher education’ that is on the way to being established and that can be regarded as a concrete example of a process of globalisation. In the first part of the paper we try to show that the discursive horizon, and (...) the concrete techniques and strategies that accompany the establishment of this space of higher education, invite the inhabitants of that space to see themselves as entrepreneurial and autonomous entities. In the second part we show how this specific kind of subjectivation (this production of subjects), related as it is to this globalised space, involves what we call an immunisation that also affects our thinking and our ideas in and about education. To refer to this as a kind of immunisation implies that globalisation could in fact be considered a closing or enclosing rather than an opening up. We argue, therefore, that this immunisation needs to be refused in favour of the invention of other kinds of subjectivity, other ways of speaking and writing about the world and about education, such that we relate to ourselves in a different way. (shrink)

This essay proposes to view networks as sociocultural structures. Following authors from Leopold von Wiese and Norbert Elias to Gary Alan Fine and Harrison White, networks are configurations of social relationships interwoven with meaning. Social relationships as the basic building blocks of networks are conceived of as dynamic structures of reciprocal (but not necessarily symmetric) expectations between alter and ego. Through their transactions, alter and ego construct an idiosyncratic "relationship culture" comprising symbols, narratives, and relational identities. The coupling of social (...) relationships to networks, too, is heavily laden with meaning. The symbolic construction of persons is one instance of this coupling. Another instance is the application of social categories (like race or gender), which both map and structure social networks. The conclusion offers an agenda for research on this "meaning structure of social networks.". (shrink)

Representing the thinking of philosophers, psychologists, sociologists, coaches, and sports writers, these essays bring together a wide range of approaches to ...

Philosophers, particularly moral philosophers, are increasingly being involved in public decision‐making in areas which are seen to raise ethical issues. For example, Dame Mary Warnock chaired the ‘Committee of Inquiry into Human Fertilization and Embryology’ in the UK in 1982–4; the Philosophy Department at Auckland was commissioned by the Auckland Regional Authority to report on the ethical aspects of fluoridating the public water supply in 1990; and many of us are serving on ethics committees of various sorts. Not only are (...) philosophers actually being called on or consulted, but many of us would argue that a philosophical contribution in such areas is essential.The involvement of moral philosophers in public policy decisions raises a question of professional ethics, viz, what role should a philosopher's own moral perspective or judgements play in the advice s/he gives, or contribution s/he makes, to public decision‐making on ethical issues. Like most problems in professional ethics, this prompts reflection on the nature of the profession, and in particular on the expertise we take moral philosophy to offer. It also prompts reflection on how processes of public decision making in ethically problematic areas should be understood. I explore these issues in this paper. (shrink)

Biomedical research involving human subjects is an arena of conflicts of interests. One of the most important conflicts is between interests of participants and interests of future patients. Legal regulations and ethical guidelines are instruments designed to help find a fair balance between risks and burdens taken by research subjects and development of knowledge and new treatment. There is an universally accepted ethical principle, which states that it is not ethically allowed to sacrifice individual interests for the sake of society (...) and science. This is the principle of precedence of individual. But there is a problem with how to interpret the principle of precedence of individual in the context of research without prospect of future benefit involving children. There are proposals trying to reconcile non-beneficial research involving children with the concept of the best interests. We assert that this reconciliation is flawed and propose an interpretation of the principle of precedence of individual as follows: not all, but only the most important interests of participants, must be guaranteed; this principle should be interpreted as the secure participant standard. In consequence, the issue of permissible risk ceiling becomes ethically crucial in research with incompetent subjects. (shrink)

This article argues that Robert Brandom's work can be used to develop ideas in the area of social epistemology. It suggests that this work, precisely because it was influenced by Hegel, can make a significant contribution with philosophical anthropology at its centre. The argument is developed using illustrations from education: the first, from the now classic replication of Piaget's ‘three mountains task’ by Margaret Donaldson and her colleagues; the second, from contemporary debates about the questions of knowledge and epistemic access. (...) This leads to a series of questions concerning the relation of concepts to each other and to objects of knowledge and to the social dimension of epistemology as it is involved in the development of human capacities. (shrink)

In _Living Without Free Will_, I develop and argue for a view according to which our being morally responsible would be ruled out if determinism were true, and also if indeterminism were true and the causes of our actions were exclusively events.¹ Absent agent causation, indeterministic causal histories are as threatening to moral responsibility as deterministic histories are, and a generalization argument from manipulation cases shows that deterministic histories indeed undermine moral responsibility. Agent causation has not been ruled out as (...) a coherent possibility, but it is not credible given our best physical theories. Hence we must take seriously the prospect that we are not free in the sense required for moral responsibility. I call the resulting view _hard incompatibilism_. Furthermore, contrary to widespread belief, a conception of life without free will would not at all be devastating to morality or to our sense of meaning in life, and in certain respects it may even be beneficial. (shrink)

We consider the problem about the length of proofs of the sentences $\operatorname{Con}_S(\underline{n})$ saying that there is no proof of contradiction in S whose length is ≤ n. We show the relation of this problem to some problems about propositional proof systems.

The goal of our article is to review the widespread anthropological figure, according to which we can achieve a better understanding of humans by contrasting them with animals. This originally Herderian approach was elaborated by Arnold Gehlen, who characterized humans as “deficient beings” who become complete through culture. According to Gehlen, humans, who are insufficiently equipped by instincts, indirectly stabilize their existence by creating institutions, i.e., complexes of habitual actions. On the other hand, Maurice Merleau-Ponty shows that corporeal relationship to (...) the world is already indirect because it is based on preestablished and readjusted “standards” or “norms” of interaction with the environment. Merleau-Ponty then calls these norms “institutions” and views culture as readjustment of institutions which operate already on the level of corporeal existence. The anthropological figure of confronting humans and animals thus cannot produce, as in Gehlen, a contrast between an allegedly “direct” relationship to the world in animals and a supposedly “indirect” relationship to the world in humans. The Herderian approach can be meaningfully retained only if interpreted as an invitation to confront the norms of indirect interaction with the world in animals and in people, that is, if viewed as a comparison of their respective institutions. (shrink)

A unique anthology featuring contributions to the dispute over free will from Aristotle to the twenty-first century, Derk Pereboom's volume presents the most thoughtful positions taken in this crucial debate and discusses their consequences for free will's traditional corollary, moral responsibility. The Second Edition retains the organizational structure that made its predecessor the leading anthology of its kind, while adding major new selections by such philosophers as Spinoza, Reid, John Martin Fischer, Robert Kane, Galen Strawson, and Timothy O'Connor. _Hackett (...) Readings in Philosophy_ is a versatile series of compact anthologies, each devoted to a topic of traditional interest. Selections include classical, modern, and contemporary writings chosen for their elegance of exposition and success at stimulating thought and discussion. (shrink)

In this paper, I assess Žižek ’s article “No Sex, Please, We’re Post-human!” as a provocative injunction to signal the posthuman ecstasy and deterrence. I seek to expose, rather than express, Žižek ’s posthumanist perspective as a paradoxical intertwining of different aspects of perspectivizing a post-human being from the view of the end of sexuality – the background that informs a posthuman future. Žižek ’s eluding the subject’s confrontation with the question of sexual difference to the apex of the genome (...) project touches the delicate coalescing of the notions of ‘objectivity and subjectivity’ and ‘virtuality and reality’ in the fate of the body. Ultimately, he renders this inception of this tarrying as a traumatic encounter that informs us of the existential birthright of a true posthuman. (shrink)

This chapter considers four areas in the differences between Vygotsky's concept of reason and ‘Enlightenment rationality’ in its familiar characterisation. These areas cover: (1) foundationalism and anti‐foundationalism, (2) the conception of science, (3) the conception of development and (4) idealism and materialism. The last is developed more by Ilyenkov, although, given its Hegelian and Spinozist provenance, it can be reasonably interpreted as part of the general direction of Vygotsky's work. Two indications of the importance of Hegel for understanding Vygotsky are: (...) first, the absence of an unbridgeable epistemological chasm between thought and world, and second, the conception of development as a non‐linear process embedded in historical resources. Marx's and Hegel's ideas of history and development influenced every aspect of Vygotsky's thinking on concepts. Vygotsky's work provides no blueprint for teachers and educational administrators, but it does provide a frame of ideas within which questions concerning education can fruitfully be pursued. (shrink)

The aim of this paper is to mount a philosophical challenge to the currently highly visible research and discourse on empathy. The notion of empathetic perspective-shifting—a conceptually demanding, high-level construal of empathy in humans that arguably captures the core meaning of the term—is criticized from the standpoint of a philosophy of normatively accountable agency. Empathy in this demanding sense fails to achieve a true understanding of the other and instead risks to impose the empathizer’s self-constitutive agency upon the person empathized (...) with. Attempts to ‘simulate’ human agency, or attempts to emulate its cognitive or emotional basis, will likely distort their target phenomena in profound ways. Thus, agency turns out to be empathy’s blind spot. Elements of an alternative understanding of interpersonal relatedness are also discussed, focusing on aspects of ‘interaction theory’. These might do some of the work that high-level constructs of empathy had been supposed to do without running into similar conceptual difficulties. (shrink)

All levels of semiosis, from the materiality of signs to their contents and the contexts of their application, are structured by a selectivity in human experience and action that foregrounds only a fraction of the situation here and now. Before Sperber and Wilson, concepts of “relevance” were proposed in both semiotics and phenomenology to analyze this selectivity. Building critically on Alfred Schutz’s phenomenology, I suggest that a productive way to capture the fundamental role of relevance in processes of meaning-making is (...) to see relevance as the outcome of an interplay between two antagonistic tendencies. On the one hand, socially stabilized and individually sedimented “types” guide our experience and action along established patterns. On the other hand, we are actively open to new and unexpected aspects; we are ready to deviate from types and to change typical patterns. Only both tendencies taken together account for our semiotic behavior in context. Spatial metaphors such as “ground” illuminate only a part of this interplay. Due to the double movement in what becomes relevant to us, the typical ground on which we produce and interpret signs is constantly being shifted and re-grounded, which keeps driving on an endless process of semiosis. (shrink)

During the 'sixties and 'seventies, Hilary Putnam, Jerry Fodor, and Richard Boyd, among others, developed a type of materialism that eschews reductionist claims.¹ In this view, explana- tions, natural kinds, and properties in psychology do not reduce to counterparts in more basic sciences, such as neurophysiology or physics. Nevertheless, all token psychological entities-- states, processes, and faculties--are wholly constituted of physical entities, ultimately out of entities over which microphysics quantifies. This view quickly became the standard position in philosophy of mind, (...) and reductionism fell out of favor. Recently, however, reductionism has been experiencing a rebirth, and many have suggested that the non-reductive approach was accepted too quickly and too uncritically. In this paper, we attempt to provide a more thorough account of the anti-reductionist position, and, in the process, to defend it against its recent critics. (shrink)

The paper addresses a question concerning George Ellis’s theory of top-down causation by considering a challenge to the “level-picture of nature” which he employs as a foundational element in his theory. According to the level-picture, nature is ordered by distinct and finitely many levels, each characterised by its own types of entities, relations, laws and principles of behavior, and causal relations to their respective neighbouring top- and bottom-level. The branching hierarchy that results from this picture enables Ellis to build his (...) model of modular hierarchical structure for complexity, his account of same-level, bottom-up and top-down causation, of emergence, equivalence-classes and multiple realisability. The three main arguments for the level-picture in Ellis’s works are reconstructed and shown to face serious problems. Finally, the paper presents a possible solution to this challenge by introducing a reformulation of certain fundamental points of Ellis’s theory that does without the level-picture of nature. This allows us to preserve all of his central claims about the model of complexity, the three types of causation, emergence, equivalence-classes and multiple realisability. Any problems pertaining to the level-picture can be remedied in the context of Ellis’s theory of top-down causation. (shrink)

Self-cultivation—taking pedagogical action to educate oneself—is an integral part of non-formal adult education. Ever since Greek antiquity, it has been a central ingredient in the western philosophical and educational tradition. However, we argue that the global challenges that have emerged in the present era of the ecological crisis call for a new kind of understanding of this basic educational phenomenon. Based in particular on recent work in dark ecology and its central concept of the ‘uncanny’, we outline a few key (...) features of our time in relation to the contemporary challenge of self-cultivation. We then review extant literature on self-cultivation to ascertain whether the theoretical resources that have been used to conceptualise it in the past are capable of addressing these new aspects of self-cultivation. We conclude that each of the theoretical resources analysed here offer valuable insights into the novel challenges facing self-cultivation, though not all important questions can be answered. By specifying the contributions and limitations of these theoretical resources, we pave the way for future work on conceptualising self-cultivation for our times. (shrink)

The aim of this paper is twofold: The general aim is to shed light on the structure of species discoveries new to biology by bringing together a practice-oriented philosophy of science perspective with a philosophy of language perspective. The more specific aim is to argue that and to show how the overall structure of biological species discoveries comprises aspects of both institutional and non-institutional reality. The author proceeds as follows: he shows that placing the focus on the topic of scientific (...) discoveries enables us to circumvent two long-standing problems. He analyzes three fictional cases of discoveries in order to bring about a greater sensitivity for the concept of discovery. He takes a closer look at a real example – the discovery of a deep-sea anglerfish – and identifies the main structural features of species discovery processes in biology. In order to connect these results with Searle’s account of institutional reality, he provides an overview of the conceptual apparatus needed here. In bringing Searle’s account together with the structural features of species discoveries developed before, he shows to what extent declarative speech acts play a central role in species discovery processes in biology. (shrink)