Thank you Cera and Sean, for your answers. I've certainly heard of a lot of these ideas, but I don't think I see the big picture. So let's say they institute a tattoo system on people's arms to keep track of their medical history. I certainly agree that such an idea is repugnant and maybe even sinister, but why would anyone want such a system so badly as to destroy civilization to implement it? I assume we are supposing that this system would be used for far more nefarious purposes than medical records down the road, right? But what would those purposes be?