The sculptor starts with a stone ? as units are added with the force of artistic intent ? a family is created
The artist attempts to create a wholeness out of the units and the art succeeds if the wholeness is depicted and sensed by the observer. The artist attempts to tell a story by creating differences in sizes of the stones, (parents and children) shapes (eg Mom land Dad leaning toward each other in affection) and color of the heads (each individual with a different personality).