This essay is part of The Truths of Aging Nobody Talks About. A MORTL series on what it actually means to grow old in America.
There are 195 countries in the world. The average American passport holder visits nine of them in a lifetime.[1] There are approximately 10,000 distinct human languages. There are 2.5 million species of living organisms that have been formally described, and estimates suggest that 80% of all species have not yet been discovered. There are 100 billion galaxies in the observable universe.
You are going to die having experienced an almost incomprehensibly small fraction of what exists.
This is not a morbid observation. It is a mathematical one. And it is one of the quiet griefs of aging that almost nobody talks about. The growing awareness that the window is closing, that the list of things you will never see or do or know is growing faster than the list of things you will.
