This article intervenes in the persistent hierarchy of epistemological worth that produces scientific knowledge as meaningful, and knowledge from arts or humanities as marginal, or illustrative. The specific trans-disciplinary project we discuss brings together environmental social sciences with performance-based Forum Theatre methods to explore 'value' as understood in communities in Tabasco and Chiapas, Mexico in relation to Payment for Ecosystem Services. Trans-disciplinary collaborations that seek to incorporate 'novel' methods to engage participants differently might better reflect the dynamic, emergent, and often shifting nature of beliefs, attitudes and values.