(consider it cc:by)
No one knew what they were thinking, or more appropriately, what they were calculating. A dozen robots fell from the sky. They couldn’t fly. They had no jet-packs, or hover mechanism, or anti-gravity generators. It was like some robot lemmings game gone terribly wrong. Luckily, no humans were harmed, but the Robot Investigation Unit has still not discovered the motives behind this strange occurrence. Still, the question remains… who programmed these robots to do what they did?