The Norse dwarves made a chain to bind Fenrir until doomsday that was impossible to break because they forged it from six impossible things, the sound of a cat’s step the beard of a woman the roots of a mountain the sinews of Ursa Major the breath of a fish and the spittle of a bird. Fenrir is a monstrous wolf that will eat Odin on the day of doom. If anyone, like Norse dwarves, could make impossibly strong things from impossible things, they would have a good business and a good sense of humor.