> But this doesn't seem like a neglected area It is generally considered a suited for a different class of problems. I think Kay's point is that decoupling th

> But this doesn't seem like a neglected area It is generally considered a suited for a different class of problems. I think Kay's point is that decoupling the messages from an object's internal state is a smart approach to system design. Many of the other "features" of OOP get in the way of this design principle.