1) The document discusses how people form models and expectations about how the world works based on their experiences. For example, a little girl expects that people, not computers, initiate actions like turning off lights.
2) It argues that when designing technologies, we should focus not just on making them smarter but on how they fit into people's lives and match their expectations.
3) The document explores different meanings of the term "agent" - as software with some degree of autonomy, and as a metaphor that shapes how users perceive and interact with a program. An agent model allows for more dynamic and knowledgeable interactions compared to a passive object model.