> 
> 
>> I go back to Alan Kay's vision of a Dynabook: A personal computer for 
>> children of all ages. It should contain all its owner's  personaldata, 
>> including  his or her personal programs, as they evolve through the years.  
>> Continuity is a must; the owner shall never loose data. 
>> 
> 
Do you really expect that the dynabook will be 100% backward compatible to 
Smalltalk-80? 

        Marcus

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