Instead of getting discouraged, researchers and students should be encouraged and rewarded for developing and testing speculative hypothetical assumptions, because they require inducing variations, which have the potential to expose an - until then still hidden - object, which could be identified at least by one distinguishable feature. If the data-driven approach directs our attention to vary specific conditions in certain directions, well and good. But if not, we must not stop varying conditions, just because no data can give us directions.
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