Speciation—the origin of new species—has been one of the most active areas of research in evolutionary biology, both during, and since the Modern Synthesis. While the Modern Synthesis certainly shaped research on speciation in significant ways, providing a core framework, and set of categories and methods to work with, the history of work on speciation since the mid-twentieth century is a history of divergence and diversification. This piece traces this divergence, through both theoretical advances, and empirical insights into how different (...) lineages, with different genetics and ecological conditions, are shaped by very different modes of diversification. (shrink)

This essay analyzes Theodosius Dobzhansky’s famous article, “Nothing in Biology Makes Sense Except in the Light of Evolution,” in which he presents some of his best arguments for evolution. I contend that all of Dobzhansky’s arguments hinge upon sectarian claims about God’s nature, actions, purposes, or duties. Moreover, Dobzhansky’s theology manifests several tensions, both in the epistemic justification of his theological claims and in their collective coherence. I note that other prominent biologists—such as Mayr, Dawkins, Eldredge, Ayala, de Beer, Futuyma, (...) and Gould—also use theology-laden arguments. I recommend increased analysis of the justification, complexity, and coherence of this theology. (shrink)

Ce numéro thématique de la revue Philosophiques est consacré aux Conférences Hugues Leblanc qui ont eu lieu du 1er au 3 avril 2010 au Département de philosophie de l'Université du Québec à Montréal. À cette occasion, le conférencier invité était Kevin Mulligan, titulaire de la chaire de philosophie analytique au Département de philosophie de l'Université de Genève, qui a prononcé trois conférences sous le titre " Wittgenstein vs ses prédécesseurs austro-allemands ", publiées dans ce numéro. Mulligan y développe un de (...) ses thèmes historiques de prédilection, à savoir la dette de Wittgenstein, dans ses travaux sur l'esprit et le langage, à l'endroit de ses prédécesseurs austro-allemands. Comme le veut la formule des conférences Hugues Leblanc, nous avons réuni quelques collègues afin de discuter de quelques-uns des aspects des travaux du conférencier invité et nous avons ajouté, pour compléter ce numéro de Philosophiques, quelques articles originaux portant également sur d'autres aspects des travaux de Mulligan. On peut regrouper l'ensemble de ces contributions sous quatre des grands thèmes exploités par Mulligan en philosophie : le domaine de l'ontologie (incluant les relations, les tropes, les états de choses et les vérifacteurs), le domaine de la philosophie de l'esprit, celui des émotions et des valeurs, et enfin le thème historique de la philosophie austro-allemande, de Bolzano à Wittgenstein en passant par M. Scheler et la phénoménologie de Munich. Faute de pouvoir rendre compte dans cette préface de l'ensemble de ces riches contributions à ce numéro de Philosophiques, je me contenterai de renvoyer le lecteur aux résumés, préparés par les auteurs de ces contributions, qui précèdent chacun des articles. (shrink)

In this paper I take evolutionary biology as an example to reflect on the role of philosophy and on the transformations that philosophy is constantly stimulated to do in its own approach when dealing with science. I consider that some intellectual movements within evolutionary biology (more specifically, the various calls for 'synthesis') express metascientific views, i.e., claims about 'what it is to do research' in evolutionary biology at different times. In the construction of metascientific views I see a fundamental role (...) to be played by philosophy, and, at the same time, a need to complement the philosophical methods with many more methods coming from other sciences. What leads philosophy out of itself is its own attention to scientific practice. My humble methodological suggestions are, at this stage, only meant to help us imagine metascientific views that are built with a more scientific, interdisciplinary approach, in order to attenuate partiality, subjectivity and impressionism in describing the scientific community. And yet, we should not be naïve and imbued with the myth of 'datadriven' research, especially in this field: other complex issues about metascientific views call for a serious, constant philosophical reflection on scientific practice. (shrink)

Contemporary evolutionary biology comprises a plural landscape of multiple co-existent conceptual frameworks and strenuous voices that disagree on the nature and scope of evolutionary theory. Since the mid-eighties, some of these conceptual frameworks have denounced the ontologies of the Modern Synthesis and of the updated Standard Theory of Evolution as unfinished or even flawed. In this paper, we analyze and compare two of those conceptual frameworks, namely Niles Eldredge’s Hierarchy Theory of Evolution (with its extended ontology of evolutionary entities) and (...) the Extended Evolutionary Synthesis (with its proposal of an extended ontology of evolutionary processes), in an attempt to map some epistemic bridges (e.g. compatible views of causation; niche construction) and some conceptual rifts (e.g. extra-genetic inheritance; different perspectives on macroevolution; contrasting standpoints held in the “externalism–internalism” debate) that exist between them. This paper seeks to encourage theoretical, philosophical and historiographical discussions about pluralism or the possible unification of contemporary evolutionary biology. (shrink)