Human beings have evolved two distinct systems for processing information. The first, the explicit system, is rule-based, can be expressed verbally, and is tied to conscious awareness. When the prefrontal cortex is fired up, the explicit system is usually turned on. But when the cold calculus of logic is swapped out for the gut sense of intuition,

As complexity proliferates, decision-making ability disintegrates. More interesting still is that unconscious decisions seem to lead to better subjective appraisals post-choice. People tend to be happier with their choices when they don’t give them much thought.