In today's world there is a good understanding of the workings and function of the human heart.  How is it then that we continue to attribute the heart with being the center of human emotions?  In reality, the emotional data center for humans is the prefrontal cortex of the brain.  This is where we discern pain from pleasure, friend from foe, gratuitous compliment from genuine praise.
It is an amazing and complex interaction of all of the lobes of the brain that integrates emotion and fact and allows humans to form opinions and make judgments about how to assess an incident or person as to whether there is danger in a given situation.  The same automatic analysis can reveal a safe situation and often provides insight into who we can trust with our emotional well-being.
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