@crazyguy “Best estimate” is not the “most likely”?
A best estimate is based on current data. It says what will be the case if current trends continue. But we know that current trends will not continue. It is therefore unlikely that the best estimate (aka the current estimate) will be what happens, which means that the most likely scenario is something other than the best/current estimate.
“They know their parameters are incorrect, and yet they keep feeding them to the public?”
The CDC is trying to provide the best information it can in real time despite the fact that the underlying numbers are likely to change. But they are also upfront about the fact that they are dealing with uncertainty, so I don’t accept your spin.
“So a person with zero co-morbidities has the same chance of death as a person with two or more co-morbidities?”
Of course not. All other things being equal, a person with two or more comorbidities is at higher risk than a person with none. But all other things are not equal since age is itself a factor. Furthermore, your age bracket includes both people who have zero comorbidities and those who have one, two, three, or more comorbidities. So the risk calculation for your age group is not just based on an increased likelihood of comorbidities, which means you cannot use your relative health to drop yourself down into a lower age bracket. This is true even if your chances are better than average for your age group—which they probably are—because being better off than others in your age bracket is not the same thing as being 5, 10, or 15 years younger.
“I do not have ready access to these previous projections.”
If you aren’t comparing the current numbers to previous numbers and tracking whether things are getting better or worse, then on what basis are you claiming that the current numbers are “good news”?
“In any case, I did think that my survival chances were much lower than indicated by the latest figures.”
I assume you meant “much higher than indicated by the latest figures.” I’m sure you have a better chance than the average for people your age, but I don’t think you have good reason to think your chances are so much better as to warrant dropping you into a different age bracket.