An impromptu work discussion broke out in the back room of the library I work at today. A co-worker is shifting their schedule and will be leaving a night noted for its harmony and collegiality. There was some discussion regarding the replacement of this co-worker by another who was changing their schedule in a domino effect. Someone declared the new co-worker an even swap in virtues for the old co-worker. The old co-worker objected woundedly. One of us said, about the new co-worker in defense of the even swap idea, "Yes, but he's a great guy. He has no flaws."