Compositionality and Meaning in Natural Language

There has been extensive debate about the principle of compositionality among philosophers of language and formal semanticists, according to which the meaning of a complex expression is determined by the meanings of its parts and the way these parts are combined. Questions about this principle can be broadly divided into three categories: why we want compositionality, what the proper definition of compositionality should be, and how various semantic phenomena can be analyzed compositionally. In this paper, I will focus on the first question. After briefly surveying well-known arguments for compositionality, I will present two methodological arguments and examine their validity.