By Ray Williams, February 18, 2019. When you see someone coughing, you reflexively know to steer clear of his or her germs. When you observe someone who is cranky or complaining, it is less obvious what to do. We know that laughter is contagious. Or if...
The capacity to emphasize the negative rather than the positive has probably been an evolutionary phenomenon. From our earliest beginnings, being aware of and avoiding danger has been a critical survival skill.
