Passage: Non-cognitivism suggests that moral statements do not express beliefs but rather function as expressions of emotion or imperatives. To say 'stealing is wrong' is, for the emotivist, equivalent to saying 'Boo to stealing!' This view avoids the 'Queerness' problem of moral realism—the difficulty of explaining what kind of objective entity a 'moral fact' could be. Yet, non-cognitivism struggles to account for moral reasoning. If I say 'If lying is wrong, then getting your brother to lie is wrong,' I am not shouting 'Boo' at a conditional; I am performing a logical operation. This suggests that moral claims have a propositional structure that emotive outbursts lack. Question: A philosopher argues that moral language is used to 'coordinate social behavior through shared attitudes.'