‘System 1’ and ‘System 2’ represent our two ways of thinking about things. System 1 is fast, intuitive, and sometimes impulsive. We use it when we respond to familiar stimuli and situations- like riding a bike or tying shoelaces. System 2 is slower and requires more effort and logic. We use System 2 when navigating complex or unknown situations- like looking for a friend in the crowd or parking in a tight space.