I like your "10 Signs of Alzheimer's". My father had every one of those signs. But I believe there's at least one more sign: Lack of sense-of-smell could be the very first sign. My father lost his sense of smell many years before there were any other symptoms. We just thought it was odd that he couldn't smell a pile of leaves burning or cookies baking in the oven and we didn't make any connection to dementia or Alzheimer's disease.
I anticipate that someone will want to tell me that it doesn't always mean that someone has dementia in their future. That's true. However, if I lose my sense of smell late in life, like my father did, I don't see how I could help but draw that conclusion. Assuming I remember to draw that conclusion.