 This does not mean that people cannot reason together, morally. It suggests, however, that such joint reasoning is best pursued as a matter of working out together, as independent moral agents, what they ought to do with regard to an issue on which they have some need to cooperate. Even if deferring to another agent’s verdict as to how one morally ought to act is off the cards, it is still possible that one may licitly take account of the moral testimony of others (for differing views, see McGrath 2009, Enoch 2014).