This document summarizes a discussion between Dan Little and Federica Russo about Dan Little's new book on the philosophy of social science. Federica appreciates Dan's engagement with scientific practice and ability to revive debates. She is most interested in the relationships between social ontology, causation, and realism. Federica asks questions about defining the social and causes in the social world, and how approaches to these issues should be iterative with methodology. She also discusses the possibility of social constructivism and reconciling methodological pluralism with unity in science. Overall, Federica's comments aim to foster further dialogue on these challenging issues.