““...the characters are useful because of some quirks of our minds, yours and mine. A sentence is understood more easily if it describes what an agent (System 2) does than if it describes what something is, what properties it has. In other words, ‘System 2’ is a better subject for a sentence than ‘mental arithmetic’. The mind – especially System 1 – appears to have a special aptitude for the construction and interpretation of stories about active agents, who have personalities, habits, and abilities.””