In the last 30 years “not-knowing” position has been one of the essential concepts of collaborative systemic family therapy. Even though collaboration is one of our essential goals, introducing this position into the medical environment seems controversial and difficult. The medical systems seem to be built on “knowing” as a main requirement. “Not knowing” in their perspective is a position reserved for social world only, not for the world of hard medical science. So, how can we use our collaborative expertise in the medical context? How can we bring in the concepts of curiosity and dialogue into the medical treatment? How can we bring these concepts into building multidisciplinary teams where staff enjoys working? This workshop was based on 20 years of practical experience of running a psychology and psychotherapy centre in the hospital context and related research. The workshop was held for international participants of the NFTO (National Family Therapy Organisations) Chamber Meeting held in Bar/Montenegro on May 26, 2022.