In a field that specializes in dialogue, consensus building, and finding solutions to complex challenges, surprisingly absent is an open exchange on a fundamental element of peacebuilding: the determination of whether or not an intervention has “worked.” Yet the reality is that the power dynamics inherent in evaluation make a lack of dialogue among funders and implementers understandable. Moreover, ever-increasing pressures to demonstrate effectiveness, consistently constrained budgets, and shifting and occasionally ill-defined standards of what counts as credible evidence are creating significant challenges for even the most sophisticated organizations in regard to monitoring and evaluating their initiatives.