 Research agendas for investigating the living world now commonly reference genes as one unit, element, or level to be considered by biologists (entry:  levels of organization in biology).  The Research Domain Criteria of psychiatry lists genes as one unit of analysis alongside cells, circuits, and physiology (entry:  philosophy of psychiatry).  Conservation biologists attend to different targets of conservation—genes, but also species, sub-species, populations, and biomes (entries:  conservation biology;  biodiversity). The ubiquity of these references to genes in scientific practices that range from understanding major depressive disorder to saving the Great Barrier Reef serves as an affirmation of Waters’ point about the power of genetics to act as a point of intervention in the world. At the same time, the fact that genes are but one item in these lists of possible points of intervention reminds us that they are not unique. 