I think messaging (http://en.wikipedia.org/wiki/Message_passing http://en.wikipedia.org/wiki/Message_passing) has always been an important aspect of OOP that wa

I think messaging (http://en.wikipedia.org/wiki/Message_passing http://en.wikipedia.org/wiki/Message_passing) has always been an important aspect of OOP that was somehow "missed". "OOP, defined in the purest sense, is implemented by sending messages to objects." - http://www.inf.ufsc.br/poo/smalltalk/ibm/tutorial/oop.html http://www.inf.ufsc.br/poo/smalltalk/ibm/tutorial/oop.html For varying reasons, people focused on inheritance. In my opinion, inheritance is bad (at least the over-use of).