The debate and its aftermath have crystallized some things in my mind, and I thought I'd note them. This subject is outside my academic area of expertise, so I appreciate that I might be mistaken in most or all of my observations. I also expect that others have put all this much better than I have. But I thought I'd pass along my thoughts, just as one American to others.
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[1.] It seems to me that the current situation highlights the major problems with the Democratic Party. Many Democrats must have been aware of Biden's cognitive decline. They must have been aware that it's a danger to the country, and a danger to their own election prospects.
