You know, there's an unseen boundary in an atom, and so we as human beings also can relate to that. Looks like you're the core and I'm the orbit that covers you. Some electrons are found in the orbit. The particle keeps the core and the orbit away and stable. People see this figure as one form, but actually the electron can not fall into the core and this theory can not be explained. It happens to us as well. We know we're so close... but something will not let us meet just like the electron and the core. We still preserve each other without impairing the system. We are one with a transparent barrier.