Chapter 1 introduces the aim and the target phenomenon of this book, that is, the dual-use phenomenon of scalar modifiers and the meaning and use of pragmatic scalar modifiers. After a brief overview of the current views on the notion of conventional implicatures (CIs) and the semantics/pragmatics interface, and observation of data for the dual-use phenomenon of pragmatic scalar modifiers, this book raises questions concerning (i) the similarities and differences between at-issue scalar meanings and CI (not-at-issue) scalar meanings, (ii) variations in pragmatic scalar modifiers, (iii) the interpretations of embedded pragmatic scalar modifiers, and (iv) the historical development of pragmatic scalar modifiers. It then also briefly outlines the core ideas and analytical directions used for answering these questions.