So a while back, I was interviewing business people still active in their 80s and 90s -- as part of a very intriguing project that got cut short but did produce some fascinating notes. I remember asking one 95-year-old guy still serving (competently) on a bank board if there was anything that he did better now than when he was in his 60s.

His answer: "I'm a better writer."

The Cambridge research cited in this study categorizes late-life changes in brain function as nothing but declining capability, all the way down. My guess is they are mostly right. But I'm intrigued by the notion that some of that elder erosion might lead to new clarity about how everything fits together.