A smart object is a design pattern in which the intelligence of a simulated world lives in the environment rather than in the characters. Instead of a character scanning the world and reasoning about what every object can do, each object carries its own behaviors and advertises what needs it can satisfy. The character simply picks the most attractive advertised option. This inverts the usual arrangement: the objects effectively tell the characters what to do.
The pattern is most associated with The Sims, designed by Will Wright at Maxis and released in 2000. The notes “Some notes on programming objects in The Sims,” written by Kenneth Forbus of Northwestern University with Will Wright, describe the underlying virtual machine (called Edith) and the core loop: every object has “a set of behaviors,” each with “a procedure that implements it, a procedure that checks to see whether or not it is possible, and a set of advertisements that describe its properties in terms of what need(s) of a Sim it will satisfy.” Then “Sims choose what to do by selecting, from all of the possible behaviors in all of the objects, the behavior that maximizes their current happiness.”
The chosen behavior’s code runs “in the thread of the Sim itself,” so a fridge knows how to feed a Sim, a bed knows how to make a Sim sleep, and the Sim only needs to compare advertised payoffs. This made the game enormously extensible: new objects could be added with new behaviors without touching the characters’ core logic, and it kept each Sim’s decision-making cheap even with a house full of interactive items.
Why business readers should care: smart objects show the power of distributing logic to where the data lives. Instead of a central brain that must know everything, each component declares its own capabilities and the agent just shops among them - a pattern that recurs in plugin architectures and tool-using AI.