When you encounter a new board game, you quickly form a sense of how fair or fun it might be—even before you've played a single round. A new study from researchers at MIT, Harvard, and Cambridge shows that people do this using a cognitive strategy called 'fast and flat simulation,' which mimics how the brain efficiently explores possible outcomes without deep planning.
The Research
In a series of studies involving over 1,000 participants and 121 two-player strategic board games (most of them novel), Katherine M. Collins and colleagues at MIT, Harvard, and the University of Cambridge investigated how people reason about games they've never seen before. Participants played games for the first time or rated games for fairness and fun based solely on the rules. Remarkably, people were systematic and adaptively rational, making consistent judgments that matched the actual properties of the games. The researchers developed a computational model called the 'Intuitive Gamer,' which relies on fast, depth-limited goal-directed probabilistic simulation—essentially, running quick mental simulations a few steps ahead rather than computing exhaustive plans. The model reproduced both players' choices and their pre-play evaluations, suggesting that humans rely on a shallow but efficient simulation to bootstrap understanding of novel problem environments. The paper was published on arXiv in July 2026.
Why It Matters
This research reveals a core cognitive capacity: the ability to make sense of entirely new situations without needing to master them. The 'fast and flat' simulation allows you to decide whether a problem is worth tackling in the first place—a skill that extends beyond games to everyday decisions like trying a new recipe, learning a new app, or navigating a new city. Understanding this mechanism could inform the design of AI systems that are more human-like in their ability to assess novel tasks.
What You Can Do
You can sharpen your own quick-reasoning skills by exposing yourself to novel puzzles and strategy games regularly. Try to predict outcomes before playing—what makes a game fair? What makes it fun? The act of making quick judgments exercises your brain's simulation abilities.
Source: arXiv q-bio.NC
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