Field Guide · II
Mental Models
Frameworks and cognitive tools that help us understand and interpret the world — and make better decisions.
It is a concept, framework, or worldview that you carry around in your mind to help you interpret the world and understand the relationship between things. Mental models are deeply held beliefs about how the world works.
For example:
- Supply and demand is a mental model that helps you understand how the economy works.
- Game theory is a mental model that helps you understand how relationships and trust work.
- Entropy is a mental model that helps you understand how disorder and decay work.
Mental models guide your perception and behavior. They are the thinking tools that you use to understand life, make decisions, and solve problems. Learning a new mental model gives you a new way to see the world. Mental models are imperfect, but useful.
There is no single mental model from physics or engineering, for example, that provides a flawless explanation of the entire universe, but the best mental models from those disciplines have allowed us to build bridges and roads, develop new technologies, and even travel to outer space.
“Scientists generally agree that no theory is 100 percent correct. Thus, the real test of knowledge is not truth, but utility.Yuval Noah Harari, historian
The best mental models are the ideas with the most utility. They are broadly useful in daily life. Understanding these concepts will help you make wiser choices and take better actions. This is why developing a broad base of mental models is critical for anyone interested in thinking clearly, rationally, and effectively.