Thinking, Fast and Slow : Hardback : Farrar, Straus & Giroux Inc : 9780374275631 : 0374275637 : 15 Feb 2012 : Two systems drive the way humans think and make choices: System One is fast, intuitive, and emotional; System Two is slower, more deliberative, and more logical. Examining how both systems function within the mind, Kahneman exposes the extraordinary capabilities and also the faults and biases of fast thinking, and the pervasive influence of intuitive impressions on peoples\' thoughts and choices.