In this installment I propose a need for, and an example of, a model for UX architecture. Models allow us to discuss a system without specifying particularities about the system. This is important if we want to understand how the system can be put to good (or better) use. Models also allow us to look at the relationships among various systems, again to improve their operational efficiency, or to determine allocation of resources. Throughout this series, I've looked to Architecture to inform UX architecture. Architecture's political and strategic positioning, its established processes and shared understanding among professionals provide a rich history…