We become caricatures of our former selves. For some this happens in childhood, others later.
Years ago, on a trip to St. Albans, UK, I remember visiting Hans in the old age home. The geriatrics seated quietly in a circle. Each had a few cookies on a plate. Crumbs accumulated on their lower lips, chins, and the front of their woolen jumpers. At first, I was surprised the nurses had neglected to tidy the spilled crumbs.
We sat at a table outside with Hans. He had always held his head on his neck stiffly. He picked up a newspaper, cocking his bespectacled head at an angle, focusing intently, licking his thumb before flipping the pages, and grunting as he always did when stumbling upon a particularly interesting bit of information. But there was no doubt that he could no longer understand anything written on the page.
the gesture survives because in fact, the gesture is all that there ever was.
things are as they seem they are.