Artificial intelligence (AI) refers to computer systems that can perform tasks normally requiring human intelligence, like lifting objects without crushing them. Swarm robotics uses many small robots working together to accomplish larger goals, inspired by ant colonies. As robots advance, they are predicted to perform more jobs currently held by humans, ranging from simple manufacturing and service jobs to complex jobs like pharmacists and astronauts. Highly realistic humanoid robots raise ethical questions about their psychological effects if used as nanny bots to care for children instead of humans.