Using prototypes and models have long been and become the life source of rich communication for a business analyst. Modelling and UI designs especially help in reducing vital mistakes, understanding of bottlenecks and capturing of information from the end users that may have been missed. It gives the analyst the understanding of what people do, not what they say they are doing to make BP more optimal. So it boils down to communication and cultural.
Communication within the organization and between vendors/partners though crucial and a BA is a bridging gap being the assigned professionals who does full time business analysis a cultural change from the top down to treat every employee as BA has even greater merits. This means employees who are empowered to be a process improver's or be a generator of ideas to improve BP's will ultimately help those project leaders and professional BA's to do their jobs more effectively and efficiently. Business analysis is after all ....the art of improving the business and every employee when treated as a professional with job descriptions filled in with details of improving process's, the end result is an ever evolving organization that is optimized to take advantage of the opportunities that come up in the market place. A culture like this discovers the business policies re-visits, re-evaluates and reforms these policies from time to time.
My thoughts till the next time,