How long does it take to build a vision?

Transition groups usually exist for between three months and 18 months and meet between three and 15 times during that period. The longer term of 18 months generally applies for arena or platform groups that are also responsible for initially translating the vision into transition paths.

A shorter period than three months is often not enough because the members have to build mutual trust and shake off ingrained mental processes, and that takes time. A transition group often also needs time to gather information to formulate the vision. 

Even without a transition group creating a vision often takes just as long: the change in the mental model required for a transition is seldom straightforward. And even if it is, initial ideas often need time to mature.