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Sentence/Millikan: Sentences are reproduced units. A sentence usually has several role models.
Syntactic rules: are the reproductively determined character of the sentence. They copy the grammar.
Sentence/Millikan: a sentence is never a simple element of a reproductively determined family, at least the syntactic form of words belongs to different families.
Syntax: can be assumed as a large superordinate family, the individual forms belong to different families.
Direct eigenfunction/sentence/Millikan: the direct eigenfunction of a sentence is derived from the stabilization functions of the elements.
Sentence/belief/language/thinking/Millikan: it seems clear that if we had no beliefs, we would stop talking or expressing sentences with meaning. But why is it clear? We need a different explanation.
Sentence/Intentionality/Millikan: Thesis: a sentence (and any other typically intentional pattern) is intentional because of the eigenfunctions and normal relations that this pattern has for a producer and an interpreter. These two are cooperating units in this process.
N.B.: then sentences are fundamentally intentional and have no derived intentionality. (MillikanVsTradition, MillikanVsSearle).
R. G. Millikan
Language, Thought, and Other Biological Categories: New Foundations for Realism Cambridge 1987