|Observation language: a language that does not use any terms of a theory and therefore would be neutral, is taken to be impossible by most authors. See also experiments, theoretical terms, theoretical entities, theories, descriptions.|
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|Observation Language||I 88
PeacockVsInstrumentalism - by separation observation terms/theoretical terms. - If X-ray tubes and Geiger counters are distinguished, then in the representational content - then we have observation terms instead of theoretical terms.
Observation Terms/Instruments/Peacocke: E.g. Square: if presented at different angles, it is epistemically impossible that it is not a square. - Pair of particles: here it is still epistemically possible that it is not the result of a collision. That always requires faith in observability, therefore circular if the belief exists and ineffective if the belief does not exist. - In contrast, none of both if it comes to understanding instead of truth.
Theoretical Terms/TT/Observation term/concept/theory/instrument/experiment/Peacocke: improved tools give us no new concepts. - Thesis: theoretical terms are always connected to observation terms - e.g. a blind, to whom a device writes information about spatial environment on the back: how should the blind test the device?
Chr. R. Peacocke
Sense and Content Oxford 1983