  Drawing on David Lewis’ and Andrei Marmor’s work on conventions, conventionalists have attempted to address this objection by distinguishing ‘deep’ from ‘surface’ conventions (Morgan, 2012). This view is called ‘deep conventionalism’. Surface conventions are what Lewis called ‘coordinating’ conventions. Their main function is to help individuals to resolve recurrent, collective problems. For instance, Morgan argues that, when participating in a game, players may encounter situations that require collective decisionmaking related to the application of a specific rule or an event that disrupts the flow of the game. To solve these problems, participants harmonize their action by agreeing to uphold the same unwritten rules.