A metaphor for what, you ask. What could Earth be a metaphor for. Earth is more metaphored against than metaphoring, if I can put it that way. It turns up in my drawings a lot. A person, serviceable enough in his or her own right, but standing there to no extended purpose; put a globe in her hand and she is worldly or he is Atlas, or vice versa. I can draw a circle and loop a few shapes inside it, and voila! they are continents and it is Earth. Here is one I did for the Christian Science Monitor and always liked. Especially the fish. I should try to find some other globe images from my files and put them up.