 Call the strengthened principle local compositionality, and  (C) global compositionality; when unqualified, ‘compositionality’ should be taken as global. The local principle is more intuitive, and semanticists frequently presuppose it. In fact, some theorists assume not only (C\(_{\textit{local}}\)), but also that concatenation is uniformly interpreted as functional application, or perhaps as conjunction; cf. Pietroski (2005, 2012). Others insist that the relevant notion of structure (C\(_{\textit{local}}\)) appeals to is the one apparent on the surface of sentences, and accordingly, our syntax should not postulate movement or empty elements; cf. Jacobson (2002, 2012). Clearly, appeal to our ability to understand novel expressions in itself provides no direct support for these strong claims.