For all the talk about robotic uprisings, man and machine have learned to coexist fairly peacefully--for the most part. Accidents do happen, and sometimes robots attack. Take, for example, the case of a worker tasked with repairing a rock-lifting machine in a Swedish factory.

The event occurred back in 2007, when the machine reportedly mistook the man's head for a rock, which was roughly the same size as those it was programmed to lift. The man managed to escape the "attack" with his life, but got fairly seriously injured in the process.

"The man was very lucky. He broke four ribs and came close to losing his life," prosecutor Leif Johansson told a local paper.

The man ultimately decided not to press charges, but the plant was fined 25,000 Kronor ($3,100). According to the witnesses, the robot told the victim, "I'll be back."