What's special about aging

Aging is the most natural thing in the world. It underpins our understanding of life and how we measure time. We start effortlessly in our earliest youth, making adjustments in how we live as our circumstances and capabilities change. And we continue realigning as we grow older, making change more deliberately as we learn more. By contrast, being old is an arbitrary social category that serves to pigeonhole a hugely diverse range of people. It is not a condition we necessarily recognize in ourselves, even when we fit the demographics