james_edin said:The distinction that resolves most of these threads is between what is true on average and what is true for one person.
Adding a me-too, because a thread of one person's experience is not much use.
Adding the clinical framing, because it changes how the question reads. The version of this that has an answer is narrower than the version being asked. Narrow it and it becomes tractable; leave it broad and the thread will produce nine confident and incompatible replies.
roxy_nash said:The version of this that has an answer is narrower than the version being asked.
Same pattern here, and in the same order.
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Shop Reference Standardsroxy_nash said:The version of this that has an answer is narrower than the version being asked.
Adding the part of the answer the thread has not reached. Start from the measurement rather than the conclusion. Almost every disagreement here turns out to be two people measuring different things and comparing the numbers anyway.