We are starting to see brain changes ahead of cognitive changes. We don't know yet if it predicts that they will go on to get Alzheimer's disease. To do that, we will have to follow them for another 20 years.

This would allow caregivers to better tell if any changes have occurred to the cognitive abilities of an individual. It also could be used to help people recall where they were the last time they had possessed a lost object, such as the car keys.

I don't know what those races are yet. I wasn't thinking that far ahead.

It's just not my turn yet, I think I've got a lot more years ahead of me,

It's just not my turn yet, I think I've got a lot more years ahead of me.

The brain works in a holistic, cooperative way that makes our basest desire or most abject fear as expressive of who we are as abstract thinking of the highest order. That means that we are all equal part snakes, monkeys, and spacemen.