To join the recent debate on data problem in linguistics, this collection of papers provides complex dual purpose analyses at the interface of semantics and pragmatics (including historical, lexical, formal and experimental pragmatics). Based on several current theories and various types of data taken from a number of languages, it discusses object theoretical issues of referentiality, scalar implicatures, implicit arguments, grammaticalization, co-construction and syntactic alternation in their mutual connections to metatheoretical questions concerning the relationship between data and theory.