This is disturbing in one very important way: the de-evolution/stagnation of humankind. Our ancestors engaged in the symbiotic habit of picking and eating each other's parasites. It might well have been a way to establish trust, i.e. social bonding, too. But look here, our future: where is that symbiosis?...a far-stretching line of "you use my back, you use my back, you use my back...", but our humanity is taken right out of the process: faceless and servile.