 So minimally there are evolutionary individuals and there are physiological individuals, and organisms are typically thought of as exemplars of (but not strictly identical to) both. Godfrey-Smith’s articulation of evolutionary individuals as Darwinian individuals has structured much recent and ongoing discussion, and Pradeu’s emphasis on physiological individuals and his appeal to immunology as a source for ideas about organisms and biological individuals more generally has garnered recent attention. These responses to Distinctions also facilitate rich responses to our remaining subsidiary question, Conceptual Space: What is the most informative way to articulate the conceptual space surrounding the concept of biological individuals? 