Situation Metaphor (Contd) 

 Situation Space 

The Organisation of Situation space is hierarchical.
It  consists of following 3 categories from Top to Bottom levels. 


Abstract Situation 
Instance Situation 
Basic Situation 


Abstract Situation 

       This situation describes a particular category of User's goals and
       is not necessary to refer to a particular location or timeinterval.

       Ex: Sales of Product A 



Instance situation 

       This situation describes the occurences of the Abstract situations
       with actual attribute values.

       Ex: Sale of Product A to Lawson shops



 Basic Situation 

        This  situation describes the actual occurances of instances
        situations in the real world. They have actual values of location,
        time and activities

        Ex: The product A is delivered to Lawson shop on Hirodaimae
        street at 9:21 on December 1, 1999.






 Levels in Situation Space