I used to believe infinity extended in all directions: outward into space and inward into the tiniest particles, from the past into the future, backward and forward in the reflections of a mirror reflecting a mirror, and around and around a circle. However, now I suspect that “infinity” means little more than “goes a very long ways.”
If you keep following a circle or a figure eight (the symbol of infinity) around and around, the shapes seems to go on forever, but who could follow them forever? Someone with Obsessive Compulsive Disorder on the very best crack could only follow the symbol around and around for a couple days at most. Once the crackhead stopped tracing the shape, the eternal symbol would cease to be eternal. A circle and a figure eight do not go around and around forever. They just sit there. Only our eyes go round and round.