Daniel Kahneman. Think slowly... Solve quickly (№ 390451)

While we are awake, working two systems - System 1 and System 2. System 1 runs automatically and System 2 is in the comfort mode the minimum effort, in other words, involved only a small part of its capabilities. System 1 constantly generates for System 2 offers: impressions, feelings, intentions and feelings. 2 if the System approves them, impressions and premonitions turn into beliefs and impulses into intentional actions. When everything runs smoothly - and it almost always happens, System 2 adopts the suggestions of System 1 little or no modifications. As a rule, you believe your impressions and act according to their desires, and this is usually quite acceptable. When System 1 encounters difficulties, she turns to the 2 System to solve current problems through a more detailed and focused treatment. System 2 is mobilized when an issue of for which System 1 has no answer.