Bob Hasan took out a box from under the guest's table in the Nusakambangan prison workshop. From within he took a piece of cloth decorated with colorful carnelian stones, and spread it out. "Look, the stones that are ground down by the prisoners can be turned into this," he said. "If you only make rings out of them, only one or two will sell. But, like this, more carnelian stones can be sold."

Bob's business brain doesn't