My wife and I went to the Kennedy center last night for the last ballet of our subscription. Although we've had hot weather already this year, the humidity wasn't bad so it was pleasant. We were on the terrace, overlooking the Potomac. (Isn't that where Captain John Smith sailed 400 years ago?) Discussed the father of a friend, who may have Alzheimer's (or micro-strokes), who was described as getting upset and irritable when things were going on that he didn't understand.
Since I'm paranoid about Alzheimers, I tried making the joke that the same description could readily apply to me. My everloving wife replied: for you, it's a character trait, not an indication of Alzheimers. :-(