What could philosophical or justice perspectives contribute to climate (and other applied philosophy) policy discussions? This question is important for philosophers on government policy committees. This article identifies two novel concerns about such contexts (which I call ‘contingent selection’ and ‘committee deference’) and systematizes some potential methodologies before arguing for a previously unrecognized methodology that focuses on disciplinary convergence. After supporting this methodology by providing several justifications, the Appendix explains how to apply it when evaluating a carbon budget. This methodology and its application are meant to be of interest to both theorists and practitioners.