Part 2 of the four episode series produced for the course Open Science for Physicists (OS4P). We discuss with our guest, Dr. Niels Marten, who is a philosopher of science at the Freudenthal institute, about the governance and credit structure in big scientific collaborations, and what should students know before joining such a project. You can find more about the course at github.com/SanliFaez/OS4Physicists