It might be equally interesting to discover why these various futures are impossible (if they are). Has anyone shown, for example, that in an Artificial life s

It might be equally interesting to discover why these various futures are impossible (if they are). Has anyone shown, for example, that in an Artificial life system (or cellular automata perhaps). That a single form can always be introduced that will dominate the system? If this isn't always the case, what conditions are required for there to be a form that can dominate the system?