|Observation sentence also protocol sentence or basis sentence: Description of a sensually perceived event. Observation sentences are not irreversible and not independent of theories because of the vocabulary used in them.|
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|Observation Sentences||I 264
Observation sentences / Field: include mathematical entities! - I 265 we have no means for a non-modal and non-Platonic formulation of observation sentences.
Realism, Mathematics and Modality Oxford New York 1989
Truth and the Absence of Fact Oxford New York 2001
Science without numbers Princeton New Jersey 1980