ELI5: Explain Like I'm 5

Relevance theory

Relevance theory is an idea about how people and other living things process information. It states that when someone is presented with a piece of information, they will only process it if it is relevant, or important, to the situation they are in. Relevance theory is based on the idea that all living things have limited energy and time, so they need to spend their energy and time on the things that are important or relevant. This means that they should ignore information that doesn't seem important or relevant. For example, if you are studying for a test, you won't want to pay attention to things that don't have anything to do with the material you are studying.