If we all breathe in O2 (Oxygen), and we all breathe out CO2 (Carbon Dioxide); where does the Carbon come from? Considering that we're all made up of Carbon, that means we breathe out a piece of ourselves with every breath. So, there are little bits of all of us floating around the world.
And since we also breathe in CO2 when we breathe, that means we're breathing in pieces of each other with every breath. I wonder if those moments when we don't quite act like ourselves...when we act in a way contrary to our normal nature...if we aren't, in fact, acting like whoever's "piece" we just breathed in. It only lasts for a moment, because we quickly breathe it out again.
But by that thought process, since we're constantly breathing "pieces" in and out, how would we know when we're acting like ourselves and when we're just acting like a piece of the collective whole?