Michael O’Rourke and I just returned from Kyoto, Japan, where we spoke and conducted Toolbox workshops with the environmental researchers at the national Research Institute for Humanity and Nature (RIHN). On the first day, we spoke on problems of communication and collaboration in cross-disciplinary research. As a way of introducing the problem, I compared inter- and transdisciplinary research (collectively cross-disciplinary research, CDR) to the game Double Cranko, which comes from an old episode of M*A*S*H. The game is a cross between chess, checker, poker, and gin (both the drink and the rummy).There are no rules; players make them up as they go along. The problem for CDR is much worse. Imagine 2 scientists from different disciplines working on a research project and 2 non-research stakeholders in that project (say one from government and another from business). Each knows one game only, and all the rules, terms, and objectives of that game. In collaborating on this project, they have to develop a way to integrate 4 different games (chess, checker, poker, and gin) into one game. But they don’t even speak the same game language. A point we emphasized over the two days with the RIHN researchers is the need for a co-creation of meaning of ambiguous terms or concepts for effective collaboration. In the morning workshop of the first day, we facilitated dialogues among the researchers to begin that process of co-creation of meaning. They had to negotiate various ambiguous terms that we gave them in a set of prompts. In the afternoon session, the researchers broke into their research teams to produce a concept map of their projects from which to find project-specific ambiguous terms or concepts that will have to be negotiated with their projects’ non-research stakeholders. [cross-posted at toolbox-project.org]