One way to scale Scrum is to get one team functioning (mature team) and then populate new teams by dividing the original members up amongst the newly created teams. Does this work? I think the answer is both yes and no. Does science have any analogies to study that would help us to predict what factors lead to the yes answer and away from the no answer?
founder effect in Caribbean lizards. The study reflects that the founders of a population have a significant effect upon the new population. However the environment also has a significant effect.
To draw the conclusion the studies author, Schoener said: “The answer we found is that founder effects can leave a persistent signal as generations replace one another over time, even as populations adapt to new conditions. Our study of these fundamental evolutionary principles affects our general understanding of how the biological world works.”
What should this tell you about the Scrum scaling practice? That the individuals that found the new teams will have a large effect upon the team's performance. And that the environment will influence this team also. What I think we forget in making this scaling Scrum technique is that significant energy (Scrum coaching) went into the first team. This is an environmental factor. If that factor is removed for the subsequent team then the individual will have a much more difficult time instilling the philosophy of Agile by themselves. Their "signal" will be diluted in the progenitor team. Now if the organizational values and principles are Agile (truly Agile) then the environment is going to support this lone founder. Yet, in many transformations this is not true - the scaling happens before the organization has had the changes set.
Founders are very important. My favorite technique for Scrum adoption is to "stack the deck" - embed 2 or 3 known agilist on the team. Yet, the environment is perhaps the one thing that the leadership has more control over.
In the book Switch - by Chip and Dan Heath creates a wonderful metaphor for change. The rider, elephant, and the environment give us a nice model for what we can effect as change agents.
I just walked into the workplace bay of a team that did just this Scrum scaling technique. Eight months later, I could no longer tell that the teams were practicing Scrum. The environment did not sustain their new Scrum practices. The founders were mutated toward the old ways faster than they muted the processes toward the new Scrum processes. The Scrum adoption didn't manifest in the next generation team.