(i) User-friendly, simple interface. The model is built with a primary purpose of
engaging the community in the debate of sustainability. In order for the model to be
valuable to a wide range of persons and groups, it was important that a broad range of
issues be represented, and that the issues be displayed in the interface in a way that easily
engages users. It was thus necessary to develop a user-friendly, easy-to-understand
interface. Through this interface, key issues are presented to the user as questions, which
are easy to understand by the general public, avoiding technical terms. Answers to the
questions dictate model parameters which then generate future outcomes under the chosen
conditions.