re: #161 engineer dog

the iron weapons were much more effective than bronze, and were wielded by relatively barbarian groups.

…and here we have the most unpredictable game-changer: a new, “weaponizable” technology to be developed, most likely based on nanotech. Whoever succeeds in developing this device will rule what’s left of the world.

Think of what would happen if either of the following could be deployed:

1) genetically-engineered virus that renders anyone who hasn’t been immunized sterile
2) genetically-engineered virus that simply kills the non-immunized

Any nation with such a technology would gladly use it to preserve a semblance of a good life for itself.