|Introduction, philosophy: the introduction of objects establishes rules for the use of linguistic expressions for the objects, not a determination or description of these objects. See also definitions, use, language, expressiveness, localization.|
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Predicates/Understanding/Introduction/Peacocke: difference: 1. how the circumstances are introduced - 2. how the content of the predicate is introduced - E.g. Def "quadround" = square when observed and round when unobserved - 1st way of introduction: through defining what is the case with observation/non observation - 2nd way: it looks square - Conclusion: one applies "square" when one is ready, to apply it also tounobserved cases.
To understand it, you have to identify independent terms and find out that they are observation independent terms. (> Observation independence, > observation terms).
Chr. R. Peacocke
Sense and Content Oxford 1983