You're not wrong inasmuch as that's what happens today. However: tools do help people think. I've worked as both an architect and an urban planner, and seen how

You're not wrong inasmuch as that's what happens today. However: tools do help people think. I've worked as both an architect and an urban planner, and seen how people engage with complex systems in those situations. Absent good modeling tools, it's easy to spin fantasies and post-hoc justifications in virtually any direction, and when those directions diverge within a collaborative effort, nothing gets done. A good modeling tool can help the situation simply by limiting the degree of divergence that is possible. It's a nudge, and it'll take the culture a long time (if ever) to fully respond to it, but it's definitely a step in the right direction.