You get up from your chair because you need something from the kitchen. The reason is perfectly clear when you begin walking, and you barely give it another thought. But when you reach the kitchen, you stop and look around. You know you came here for something, although whatever it was seems to have disappeared …
Somewhere in the future, there may be a person who is the last human being on Earth to remember you. They may be very old by then. Perhaps they will remember the sound of your voice, the way you laughed, or something insignificant you used to do without realizing anyone noticed. They might remember sitting …