What to represent in the world--domains of entities

  Now, consider entities in the world again. Suppose a reasoner decides to represent the concept of love. This seems to possess the qualities which would make it best represented as an object. It fills the same lexical role that objects tend to fulfill; namely, acting as a noun. In most communication it is utilized as any other object would be. Yet, there seems to be some fundamental differences between the love object and an object such as a table. They both are objects, yet they differ in important ways. How should these differences be captured?

  In addition to there being four types of entities in the world, it is possible to consider the domains in which entities can exist. A table is an object which exists in the physical world; love is an object which exists in the landscape of internal mental activity. This difference in domain explains the difference in the two objects and the differences in the ways they are viewed. Physical entities share certain characteristics which separate them from the non-physical elements of the world. As agents which act in the physical world, that is the one which most reasoners have the highest degree of familiarity with.

The physical domain also tends to be presented quite often in stories, as these are many times intended to be reflections of the familiar world. Much of the action in both Zoo and Lycanthrope takes place in this domain. The spaceship's arrival is in the physical world; the ritual which Ed and Norm perform is physical in nature. However, four non-physical domains exist in the world and in text; these need to be described to understand the range of entities which exist.