Daniel Kahneman. Think slowly... Solve quickly (№ 391364)

Main function of System 1 - track and update your personal model of the world, describing that it is normal. The model is based on associations that link ideas of circumstances, events, actions, and consequences, with some regularity appear together either simultaneously or one after the other within a relatively short time. According to the formation and strengthening of these relations a set of related ideas shapes the structure of events in your life and determines your interpretation of the present and your expectations for the future.