The curve is more accurate going forward for sure, but it's possible to record an increase in new cases each day simply by doing more tests, even as the number

The curve is more accurate going forward for sure, but it's possible to record an increase in new cases each day simply by doing more tests, even as the number of new cases per capita declines. This effect theoretically wouldn't stop until you were testing basically everyone, at which point the new cases per capita and the new cases would be the same.