Adding the clinical framing, because it changes how the question reads. If two explanations both fit, the useful question is which one predicts something the other does not. That is answerable; arguing about which sounds more plausible is not.
MASHdoc_SA said:If two explanations both fit, the useful question is which one predicts something the other does not.
This is my experience too, for whatever a second data point is worth. The detail I would add is minor and it is already implied above.
MASHdoc_SA said:If two explanations both fit, the useful question is which one predicts something the other does not.
Adding the part of the answer the thread has not reached. Order of operations matters more than any single choice here: establish a baseline, change one thing, wait long enough for it to express itself, then measure again under the same conditions.
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One thing that is still open after MASHdoc_SA’s answer:
What did you change at the same time, and can you separate the two now?