 A mental space is an arrangement of discrete concepts or images deployed so as to represent some familiar recurrent sort of situation. Imaginative manipulation of such a space allows us to anticipate the structure at a time and behavior over time of situations of the sort it is designed to represent. Mental spaces represent ways things can be conceived to be in something of the way possible worlds represent ways they could be. Gilles Fauconnier (1994) proposed them as a basis for interpretations of counterfactuals and propositional attitude constructions he viewed as superior to the standard truth conditional interpretations based on quantification over possible worlds.