Yes according to Dan Roam. See for yourself in the video below. I think he has some very powerful tips but I do think these could be more effective using mindmaps (on the back of a napkin). Especially if you are trying to build a shared mental model. In my experience if you use Dan’s tips in combination with Tony’s tips (Buzan) and build it interactively with your audience you will become much more succesful in establishishing a dialogue with your (business)partners in such a way that the shared mental model that you have build together will support better communication decision making and knowledge gathering.