Game theory provides formal means of representing and explaining action choices in social decision situations where the choices of one participant depend on the choices of another. Game theoretic pragmatics approaches language production and interpretation as a game in this sense. Patterns in language use are explained as optimal, rational, or at least nearly optimal or rational solutions to a communication problem. Three intimately related perspectives on game theoretic pragmatics are sketched here: (i) the evolutionary perspective explains language use as the outcome of some optimization process, (ii) the rationalistic perspective pictures language use as a form of rational decision-making, and (iii) the probabilistic reasoning perspective considers specifically speakers’ and listeners’ beliefs about each other. There are clear commonalities behind these three perspectives, and they may in practice blend into each other. At the heart of game theoretic pragmatics lies the idea that speaker and listener behavior, when it comes to using a language with a given semantic meaning, are attuned to each other. By focusing on the evolutionary or rationalistic perspective, we can then give a functional account of general patterns in our pragmatic language use. The probabilistic reasoning perspective invites modeling actual speaker and listener behavior, for example, as it shows in quantitative aspects of experimental data.
Several attempts have been made to classify Romance languages. The subgroups created can be posited as intermediate entities in diachrony between a mother language and daughter languages. This diachronic perspective can be structured using a rigid model, such as that of the family tree, or more flexible ones. In general, this perspective yields a bipartite division between Western Romance languages (Ibero-Romance, Gallo-Romance, Alpine-, and Cisalpine-Romance) and Eastern Romance languages (Italian and Romanian), or a tripartite split between Sardinian, Romanian, and other languages. The subgroups can, however, be considered synchronic groupings based on the analysis of the characteristics internal to the varieties. Naturally, the groupings change depending on which features are used and which theoretic model is adopted. Still, this type of approach signals the individuality of French and Romanian with respect to the Romània continua, or contrasts northern and southern Romània, highlighting, on the one hand, the shared features in Gallo-Romance and Gallo-Italian and, on the other, those common to Ibero-Romance, southern Italian, and Sardinian. The task of classifying Romance languages includes thorny issues such as distinguishing between synchrony and diachrony, language and dialect, and monothetic and polythetic classification. Moreover, ideological and political matters often complicate the theme of classification. Many problems stand as yet unresolved, and they will probably remain unresolvable.