VanRx_Mike said:The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.
Adding the part of the answer the thread has not reached. It is worth asking what the claim would look like if it were false. If nothing would look different, it is not a claim about the world and no amount of discussion will settle it.
Adding the numbers, since they settle part of this. Keep the original post as written when you update it, and add the correction underneath. An edited-away mistake is invisible to the next person who makes it.
A narrower follow-up, since the general answer is now clear:
How would you tell the difference between that and the alternative explanation?
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Shop Reference Standardsquinn_sf said:Keep the original post as written when you update it, and add the correction underneath.
I am going to disagree with the direction of travel here. The thread has converged on the tidiest answer rather than the best-supported one, and those are not the same thing.
quinn_sf said:Keep the original post as written when you update it, and add the correction underneath.
No disagreement, though it depends on where somebody is starting from, and this thread has been assuming a starting point nobody stated.