I sit in a chair outside our front door with a view of the surrounding forest. Flies buzz nearby, birds chirp a little farther away; and geese argue heatedly about something at the neighbor's pond. Someone is nailing something, swinging a hammer hard. I close my eyes, taking it all in: flies, birds, geese, hammer, sunshine.
The rhythmic pounding goes first, hammer slipping out of my mental grasp, then the geese fade away, still arguing, followed by the flies, birds, sliding from my awareness until there's just the silent sun shining on an empty chair.