On 12-30-97 William Elliot wrote to John Boone... 
 
        Hello William and thanks for writing, 
  
        [snip] 
  
 WE>  JB> In this situation as I pointed out to Clarence either or 
 WE>  JB> situations are -ONLY VALID- when dealing with NOT more than  
 WE>  JB> TWO classes.   
 
 WE> Indeed 'or' is a binary operator, i.e. applies to two 
 WE> things, propositions in our case.  The logical connective  
 WE> 'or' has two different senses, inclusive or, and exclusive  
 WE> or.  Exclusive P or Q is P or Q but not both P & Q.   
   
  Yep, and I was using the exclusive -OR-. 
  
        [snip] 
  
 WE> JB> However, in the Aristolian world, there is no way one 
 WE> JB> can act in ethically good ways (A stands for ethically good  
 WE> JB> ways) AND act in ethically NOT GOOD ways (not A) at the  
 WE> JB> same time.   
 
 WE> Hence the expression stereotypical 'black and white' thinking. 
 
  Yep, but binary logic is such a case. 
 
Take care, 
Happy New Year! 
John 
 
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