Not being knowledgeable in this area myself, but this is what somebody I know told me some years ago:
The function of human’s brain is more like a pattern recognition machine than anything else. For almost all people, they are really not very good at reasoning, even when many of them believe they are good at it.
A good example is to play chess. It relies mostly on brain’s capacity of pattern recognition, not so much about the reasoning, as I heard.
Many human beings could be good at their emotion aspect of the brain functions, like love, hate, happy, and sad. It created all the good and bad things in the world.