Robotics is a branch of technology that deals with the design, construction, operation, and application of robots and computer systems to control them. Robots can take the place of humans in hazardous or manufacturing processes, or resemble humans. The word "robot" comes from the Slavic word for forced labor and was introduced in a 1921 play. Components of a robot include a power source, actuators like electric motors or muscle wire, and sensors for feedback. Artificial intelligence aims to create machine intelligence by designing intelligent agents that perceive their environment and take actions to maximize success. Some problems in AI include replicating specific human traits or capabilities in machines. Philosophy questions whether machines can truly be intelligent or have a mind like humans.