In his book Thinking Fast and Slow, Daniel Kahneman refers to the parts of our brain, where he suggests there are two competing intelligence at play.
He specifies one area affiliated to “system 1” which is known to be an area relying on speed in decision making and on emotion in information perceiving. System 1 is based largely on our instinct and intuition unconsciously stored by past experiences that are often rapidly available to memory. The second area is affiliated to “system 2” which is known to be an area for slow and deliberate decision making and more rational in information perceiving. This area takes in information based on our conscious appraisal of current events, and our stored episodic long-term memories, which are slowly available to memory. Why do we care?