A ghost in the world of Kasslyne is a disembodied memory of a dead person that has escaped from the khert. Ghosts can come in many forms ranging from human-like to merely balls of light. Most ghosts are not self aware. All ghosts are eventually reabsorbed back into the khert unless they can bind themselves with a First Materials. Ghosts that get into pymarics can cause them to malfunction. Ghosts can be used in the creation of constructs. The art of searching the khert for ghosts and drawing them out of the khert is called "sounding".