Notre invité sera Jacob STEGENGA (Université de l'Utah). Il interviendra sur le thème suivant: « Population Pluralism »
Résumé: What conditions must a group of organisms satisfy such that the group can evolve? Philosophical work on the concept of biological populations has recently exploded. There have been broad, abstract approaches to answering this question, such as Lewontin’s articulation of Darwinian conditions (heritable variation of fitness), and there have been narrower approaches which employ more constraining conditions, such as spatiotemporal boundary requirements or conspecifity. In this talk I review the most prominent analyses of biological populations, and argue that the narrow approaches face numerous difficulties, including conceptual problems, empirical counter-examples, and operational challenges. I argue for a radical notion of biological populations—what I call population pluralism—which holds that for a single set of organisms there may be multiple ways to properly demarcate that set into biological populations.