The concept of Zombies originatd in Zambia where people use drugs to fake people's deaths and erase their memories and then turn thme into mindless drones for their personal uses like drug trafficking and prostitution. I learned that from a movie a bout a snake and rainbows or somethign.
We're more likely to suffer a pocalypse at the hands of aliens than we are to be attacked by robots anytime soon. Robots are stupid.Robot apocalypse is what you've gotta worry about since eventually someone's gonna make some kind of robot that doesn't conform to the 3 laws.