We can finally dispense with the myth that polls are accurate.

OK, that's too simplistic. Polling is hard and you have to continually adjust your assumptions, and when those assumptions are flawed, your results may be inaccurate, and it is always possible that your assumptions are flawed, so you can never assume your results are accurate.

So polls are not trustworthy, even the best ones, but they are still right more often than not, because when our assumptions are proven wrong, we adjust to the new discoveries. And polls will have accurate results for a time ... until our assumptions are wrong again.

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