> Hi Johan,
> 
>    Have a look at http://www.zope.org/Members/sspickle/DumbZPatternsExample
> 
> The best way I've found is to provide a method (or methods) in the 
> Specialist of the contained item to get ids of those instances satisfying certain 
> criteria... 
> 
> e.g., getToDoIdsForDoer( aDoer )
> 
> (the contained item keeps a reference to the id of its container.)

Thanks Steve,
I like that because the container doesn't know about it's Content,
but how does that comply to the Who I Know pattern?

TIA/Johan
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