Hi Joe,

I think Joe Kopena wrote:
> 
> (defrule Rule2
>    (list-item ?list ?item1)
>    (assoc ?x ?item1)
>    (not (and (list-item ?list ?item2)
>      (not (assoc ?x ?item2))
>    ))
> =>
>    (printout t "//-- " ?x " is of-list " ?list crlf)
> )
> 

I suspect you're using a version of Jess prior to the just-released
6.1a3. In earlier versions of Jess, this rule won't be compiled
correctly. Try 6.1a3, and you should find that your rules will work as
you'd expect.

---------------------------------------------------------
Ernest Friedman-Hill  
Distributed Systems Research        Phone: (925) 294-2154
Sandia National Labs                FAX:   (925) 294-2234
Org. 8920, MS 9012                  [EMAIL PROTECTED]
PO Box 969                  http://herzberg.ca.sandia.gov
Livermore, CA 94550

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