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Sense Data/Contradiction/Millikan: a contradiction can only arise if one and the same judgment is applied several times.
Object: the same object must have been identified in more than one way. That is, it must be possible that there is more than one intension of an object.
Sense data/MillikanVsSense Data theory: sense data cannot be the object because a sense date cannot be given in several ways. ((s) There is always only one way of givenness of a sense date, otherwise it is about several sense data).
Sense Data/Millikan: Every sense date presents itself only to one sense (e.g. touch, sense of smell). (s) i.e. it cannot be said that this soft object smells rotten or that it is the same object).
Millikan: one needs a fully developed theory about law-like relationships between sense data. Otherwise you cannot test them at all! And therefore no concepts can be developed from them. And this would be contrary to the first condition that the concepts to be tested should only form small groups.
Sense Data Theory/today/Millikan: the prevailing view seems to be that neither an inner nor an outer language actually describes sense data, except that the language depends on previous concepts of external things that normally cause sense data.
R. G. Millikan
Language, Thought, and Other Biological Categories: New Foundations for Realism Cambridge 1987