To understand a model of true natural occurring perpetual motion we have only to look at the way that we treat each other. I know that these seem like comparing apples to oranges but follow me for a minute.
Often times when we are hurt we say direct our blame towards the person who hurt us directly but the reality is that we have just been affected by something that was set into motion centuries ago and will probably continue into eternity.
If we look a little deeper we might consider that we are actually paying for the pain of the person who hurt us because somebody hurt them but that wouldn't even be right but it is moving in the right direction.
The reality is that somebody way at the beginning of time was hurt and had their heart broken and the rest of us have been paying for it ever since. I know that religion attempts to explain the source of this pain but I'm not addressing that at this point. This person was hurt and so that person hurt other people and those people hurt more people and so on and so forth.
Now also understand that there are example where the impact or intensity of the pain being passed has been reduced was reduced and/or raised but always constantly in motion.
In perpetual motion you are always going to have energy leaks and resistance that can never be eliminated the idea is that it moves like an ocean with each wave connected to another wave ebbing and flowing against each other. You need to make the motion become part of the itself so that the consumption of the fuel creates more fuel.
This is the underlying point that connects perpetual motion and the way we treat each other. The consumption of the fuel used to hurt us also created the drive to hurt another person.