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              Knowledge 
              is built up from observed facts (either first-hand or sometimes 
              second-hand or even "multi-hand") and from beliefs. The 
              word 'fact' has the same root as 'face', so a fact is what happened 
              in front of your face (or somebody else's face). And we all "know" 
              what a belief is. Some are argued hotly, all the way into wars, 
              especially when religion is involved, while others are given nice 
              names like "hypothesis". And I "know" we need 
              FACTS to know what is true or false, preferably facts that can be 
              repeated.
            But if we recognize the 
              above definition of knowledge, than there are many fewer reasons 
              to argue because we can figure out where the other party is coming 
              from.
            Have fun,
              Ahne