"""The actor model has no direct notion of inheritance or hierarchy, which means it is time consuming and confusing to program actors with trends of common behaviour."""<p>Mozart/oz allows you to easily implement actors which also have OO inheritance.<p>Generally, many superior programming paradigms (logic, constraint, functional, concurrent) have been ignored by the computing industry which has probably cost it billions of dollars in lost productivity.
I am one of the people who has not bothered to learn about the "actor model" and thus perhaps lost billions... Why? Because it smells of needless complexity, just like XML, Java, Haskell, and everything Microsoft touches.<p>I think for a technology (or at least a language) to go viral it needs either (1) lots and lots of money (Java for PR, VBA because of the $$$ MS ecology) or (2) a fairly genius level combination of power and simplicity (C, and why Tcl/Tk won't quite die...).<p>The actor model, functional programming, blah blah blah, have neither enough money behind them to make them happen, nor the magic balance of simplicity and expressiveness such that that a smart 17 year old can spend a weekend learning them and then begin writing apps that had been impossible before said language (lua, for example).<p>So ... keep trying ;)