More surface allows for more ideas.
Great ideas can be written on a Board and remain visible throughout the session to stimulate more ideas. Great ideas or contributions can simply be jotted down on the nearest Board. This can be achieved by displaying each alternative in a way that lets the group compare them concurrently. Each of the wall-mounted Boards can be used to record the pros and cons of each alternative. With this setup, team members can see all the alternatives concurrently when making their decision.