System 1 & System 2
System 1 / System 2 · Fast and slow thinking · Thinking, Fast and Slow · Дві системи мислення · Система 1 и Система 2 · Думай медленно, решай быстро
Two modes of thinking: System 1 is fast, automatic, associative; System 2 is slow, deliberate, effortful.
Most of the time we don't think. We recognise. System 1 reads faces, parses language, jumps to conclusions, and hands System 2 a finished answer. System 2 is the editor we engage when we have to calculate, compare alternatives, or fight an impulse. The problem isn't that System 1 is wrong - it's that System 2 is lazy and usually approves whatever System 1 served.
Naming the two modes is the prerequisite for almost everything else in Kahneman. Bias, overconfidence, framing - all of them are System 2 falling asleep on the job.
You read «3 × 5» and the answer arrives. You read «17 × 24» and have to stop. The first is System 1; the second wakes System 2.
- 1Before any important decision, ask: «is System 1 already handing me a finished answer?»
- 2Make System 2 work explicitly: write down assumptions, list alternatives, compute one number that disconfirms your impulse.
- 3Notice fatigue. Tired System 2 is no System 2 at all.
«Trusting your gut» is sometimes correct (chess masters, firefighters) - but only in environments with stable feedback and many repetitions. In novel or noisy domains it's just System 1 making things up.
This part of the knowledge base is inspired by the book. Go to the Ukrainian edition to explore the concept in depth.
- · Методичка по Канеману - раздел 2 «Карта системы Канемана»