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Unit 2: Knowledge




          order to refashion the world in the interests of man and society. Human knowledge is a highly  Notes
          complex system, a social memory whose wealth is passed on from generation to generation by
          means of social heredity.




                                    INFERENCE            Control System
                                      ENGINE             Interpreter






                                    KNOWLEDGE
                                       BASE




          2.1.1 Knowledge Progression


          The concept can be understood by the following figure:
                                   Figure 2.1: Knowledge Progression



                              Information            Knowledge             Wisdom

          Data: Data is viewed as collection of disconnected facts.


                 Example: It is raining.
          Information emerges when relationships among facts are established and understood;

          Provides answers to “who”, “what”, “where”, and “when”.


                 Example: The temperature dropped 15 degrees and then it started raining.
          Knowledge emerges when relationships among patterns are identified and understood;
          Provides answers as “how”.


                 Example: If the humidity is very high and the temperature drops substantially, then the
          atmosphere is unlikely to hold the moisture, so it rains.

          Wisdom is the pinnacle of understanding, uncovers the principles of relationships that describe
          patterns;
          Provides answers as “why”.


                 Example: Encompasses understanding of all the interactions that happen between
          raining, evaporation, air currents, temperature gradients, changes, and raining.






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