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That’s the thing, we don’t know how they’re correcting for it, and if it is just a fudge factor. The issue is there’s more confounding factors that anyone could list which could be the culprit here.
A fudge factor is easy, but the wrong solution here. But the right solution is incredibly complex and difficult to even identify. In my field we can get away with using a timer instead of a precise calculation sometimes. That really isn’t an option for polls. I don’t favor the people trying to fix the models.