Abstract: A compiler architecture uses a question and answer methodology between a reduction engine and nodes of a graph representing the program being compiled to provide for easy expandability of the compiler. By using the question and answer methodology, additional functionality can be added to the compiler by users, whether they be part of the original design team of the compiler or be a subsequent user.

Abstract: Fracture promoting media are comprised of mercury and an alkali metal selected from the group consisting of cesium, lithium, sodium and potassium. A modification of the foregoing media is achieved by the addition of a metallic sulfate solution selected from the group of gold sulfate, silver sulfate and copper sulfate. A method of achieving failure of a material at greatly reduced energy requirements comprises contacting the material at a desired place for failure with a medium of mercury and an alkali metal selected from the group of cesium, lithium, sodium and potassium and applying force to the material. A modification of the foregoing method comprises contacting the material at a desired place for failure with a medium of mercury, an alkali metal selected from the group of cesium, lithium, sodium and potassium and a metallic sulfate solution selected from the group of gold sulfate, silver sulfate and copper sulfate and applying a force to the material.