“Mental models are representations of how something works. We can’t keep all of the details of the world in our brains, so we use models to simplify the complex into understandable and organizable chunks. Whether we realize it or not, we then use these models every day to think, decide, and understand our world. They help us decide what information is relevant and what information is irrelevant.” Curious to read on? Check out this Farnam Street article (great links to explore as well, if you want to delve deeper).