"Grandfather, why did so many people have to die in the past?" asked Cynthia.

"Oh, because of invasions, threats to national security, or often to exploit a resource."

"That's so horrible, Grandfather!"

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"Indeed, Cynthia, millions perished in the first two world wars and billions vaporized in the third, not counting the myriad of battles since the dawn of humankind."

"But no longer, right, Grandfather?"

"That's right. We now have our Symmetry-Bots for that. They infiltrate, replace, and then impersonate high-ranking commanders. 'Cutting the heads off the snakes,' so to speak."

"No more wars!" Cynthia clapped.

"No more wars!" Grandfather smiled.