This presentation discusses rational agents and rationality. It defines rationality as acting reasonably and with good judgment to achieve goals. A rational agent selects actions that are expected to maximize its performance given its percepts and prior knowledge. Rational agents use functions to map percept sequences to actions. Examples discussed include a delivery robot, diagnostic system, trading agent, and tutoring system. The presentation also covers the key components of agents, including performance measures, environments, actuators, sensors, and the PEAS framework. It concludes that building more autonomous rational agents with enhanced learning abilities can satisfy the growing demands of artificial intelligence.