“…5(c) have all resorted to essential changes in the specification of the game, introducing either repetitions (e.g., Aumann & Sorin, 1989), a "cheap talk" stage during which players can make costless announcements before choosing their strategies (e.g., Farrell, 1988), modifications of the assumption that players know that they choose their strategies independently (e.g., Colman & Bacharach, 1997;Krueger, 2008;Krueger & Acevedo, 2007), or special modes of reasoning (Bacharach, 1999(Bacharach, , 2006Sugden, 1993Sugden, , 2005.…”