a recently made entertainment he'd heard people talking about. It concerned a planet whose intelligent inhabitants were sentient glaciers and their iceberg children. He had expected to despise its preposterousness, but found it quite amusing. He sketched out a glacier game, based on what sort of minerals could be gouged from rocks, what mountains destroyed, rivers dammed, landscapes created and bays blocked if--as in the entertainment--glaciers could liquefy and re-freeze parts of themselves at will.