In the social sciences, triangulating one's research is the process of incorporating two or more research methods to cross examine the data and increase the validity and credibility of the results. Triangulation acknowledges that any investigation brings with it particular biases, but the presence of multiple approaches aims to keep these biases in check.
In the same way, we have structured our partnership around this kind of triangulation. By requiring each of us to sign off on conceptual decisions and their representation in project documentation, we've built this cross examination into our process. This triangulation creates an economy of ideas and it means that, as one part of the triangle, I'm not always going to get my way. Every idea I propose may not be acted upon, but hopefully the best ones will.