Have you ever worked with a group and over time realised how wrong your initial impression was. Did you find that the joker in the group enjoys making sarcastic fun of others while they can’t stand being made fun of? Or that the pleasant, homely looking woman at the reception is a vicious gossip?
Place a group of different personalities in the same room for eight hours a day, five days a week, add the stress of deadlines and target, and you have a recipe for disaster. No matter how well intentioned and intellectually compatible the group of people may look, inevitably, there will be squabbles over this or that.