That fasteners remain fasteners whether fastened or not. When people buy it, it is a fish. The box ties one on. What is good enough for the fish is good enough for the box. It is good that the fish is not fastened.
People eat what looks to be fish.
The fish spills. The box is simpler than the fish. Perfectly cooked, but still no one wants to eat it. It is a good box when people buy it. That the box and the fish are not over there.