Acting rationally: act rationally, as agent (agent is a program that has the ability to act. Or representation in automatic systems) can act rationally is the agent of action to achieve the goals set by the agent in the automatic driving system, the goal is to reach the goal in the shortest distance possible. To choose the shortest path to the target as possible, so it will be called agent act rationally. Agent, such as a chess game, the goal is to beat your opponent. To choose a move to make the opponent lose the field.