Yes, and at this point idle speculation is all that's available--at least to me, given my levels of vulnerability and risk tolerance.
Another reason I'm wondering whether my perceptions may have changed during the past couple of years is that I've somehow grown significantly older and more fragile. Age-related health issues like this vary hugely from person to person, and mine seem to have accelerated recently. I don't want to catastrophize, but I'm trying to allow for a range of possibilities.
Mark
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