Marc Rettig’s work is defined by a question: “How can we amplify the shift toward life-sustaining ways of creating together?” He began pursuing this question in 2009, after a first career in software and long experience in design research, strategic design, and interaction design. This turn from business to social questions led Marc through fifteen years of immersion and practice in group hosting, emergent approaches, and the invisible tangle of self, relationship, and story that makes something “social.”

Because of this work, Marc was invited to be a founding professor in DSI in 2012 and has co-taught the “Fundamentals” course ever since, apart from a two-year hiatus in 2024–’25. He previously taught at the Carnegie Mellon University School of Design and the IIT Institute of Design in Chicago.

Marc is founding principal of Fit Associates, where he works with organizations and communities to host transformative conversations and learning experiences, supporting leaders to stand in complexity and create together. As founder of Okay Then, he produces books, gatherings, and media, amplifying voices that can teach us new ways of seeing, working, and being.

Marc plays and creates with a global community of friends, from his home in the Polish Hill neighborhood of Pittsburgh, returning whenever possible to his birthplace in Montana.