>>Personally, I don't think it's ever necessary to redefine methods in
>>"System" objects such as Object, Collection or String. Other
>>programming languages manage fine without being able to do this.

Well lots of other languages make it "just fine" without being "classes all 
the way down" as well.  I think both of these things are part of what makes 
Smalltalk different and much more powerful then nearly all other languages 
(only lisp can really compete imo).

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