"You know why selfishness is a stupid concept? For the same reason cancer cells are always doomed; they consume everything, feed off their host and take all there is to take for themselves, then, the host dies and the cancer with it. No matter how large and deeply implanted it is, the selfish will die with the rest of the world. That's why you should get to work now."

This serves the purpose of collecting my ideas on factions size into a single document, collecting Story Bits that I think might come in handy sometime later and getting feedback on what people think of the numbers I come up with.