Ben listened to the smooth, nearly frictionless vibrations as the marble rolled in a path up the sides of the bowl and around. He examined the color and the finish of the marble, weighed it in his hand, and, satisfied after his appraisal, placed the marble he’d carried around all the previous day onto the rim of the bowl and let it circle to rest at the center. Until one day, Ben picked up the day’s marble, and for whichever reason, preferred to keep hold of the one he had, and let the new one slide back into the bowl. The glassmaker was startled, curious, and after the boy left, he picked up the marble and examined it. The man looked up, startled, and opened his hands to find that Ben had placed the glassmaker’s marble there.