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Why is there said to be no pure observation in science?

AInstruments always break
BData needs a theory to read
CNature never changes
DScientists dislike counting
Answer & Solution
Correct answer: B. Data needs a theory to read
1. Raw data must be interpreted. 2. Theory is required to interpret empirical data, so the observer's conceptual framework influences observation. 3. Therefore observation is never wholly free of theory. _Source: Wikipedia, Scientific method, Theory's interactions with observation_
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