Empirical approaches add value to international investment law and aid in its evolution. Nevertheless, we must "fit the forum to the fuss." When transforming international law, we select proper methodologies for specific research questions and make international law empiricism part of a larger post-structuralist, pluralist legal dialogue. In connection with that, my remarks first place empirical research on international investment in a historical context. I then discuss where the research is today and offer an example of how empirical methods can be used to understand, reassess, and possibly transform international investment law and related institutions. Finally, I consider the future of empirical research related to international investment.