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The first two steps will create all of the necessary objects in
the Object Hierarchy. The Object Hierarchy models the real world
by creating relationships between objects and assigning attributes.
The objects create a hierarchy using ISA relationships, with general
objects at the top of the tree and refining details with each level.
The Object Hierarchy always has the root object with the object id
of 1, and the comment Object.
The Object Hierarchy for the real world would have Object at the root.
Under the root, objects such as Abstract and Physical. Abstract would
contain things such as ideas and colors. Physical would be actual
objects in the real world, such as animals and buildings. Under
animals, depending on the programmers intent, the animals could be
broken down by species or scientific categories.
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