[Pharo-users] adding instance variables (data) to the Object class

[Petr Fischer via Pharo-users]

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Hello! Weird question: why I can't add instance variables to the Object class 
(for example "oid" or something else)? Is it due to some internal (and 
different) VM "class layouts"?

Or - can I inject my own information to all existing objects (any class)?

Thanks! pf

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