Everything starts somewhere, although many physicists disagree. There is the constant desire to find out where - where is the point where it all began. But much, much later than that, the Discworld was formed. Drifting onwards through space, atop four elephants on the shell of a giant turtle, the Great A'Tuin. It was some time after its creation when most people forgot that the very oldest stories of the beginning are, sooner or later, about blood. At least, that's one theory.