Jim Tebbe spent 33 years at Shell Oil leading learning and organisational development initiatives alongside Academy members Jane Ball, Peter Garrett, and Beth Macy. His focus on dialogue, action learning, team effectiveness, and coaching now centres on David Kantor's work about operating models. Kantor suggests that without awareness of our operating models, we easily misinterpret the results of our actions. Our own thinking may be more accountable for outcomes than we recognise. The practice of model-building helps us get clear about how we think as agents for change, making us more aware of our influence on results. In this participative webinar, cohosts Nancy Dixon and Linda Ellinor interview Tebbe about operating models before moving participants into breakout groups for cross-model conversations. For practitioners seeking to understand why their interventions succeed or fail, Tebbe offers tools for examining the usually invisible assumptions about self, change, and client that shape everything.