This paper contributes to the current discourse on the role of artefacts in facilitating and triggering interaction among people. The discussion will focus on artefacts used as part of an interview method developed in order to discover knowledge that was observed but absent from both project reports and other documentation within multidisciplinary collaborative research projects, located within the field of Interaction Design. Using artefacts in an interview context enabled participants to

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... l insights that were, in turn, participatory and human-centred. Thus the method was effective and appropriate in illuminating knowledge situated in interaction. This ethnomethodological tool enabled participants to reflexively externalize their understanding of the complex interactions that occur within projects, encouraging participation, interaction, visualization, reflection and communication through the use of tools aimed at capturing and illuminating the lived experiences of human engagement. These interviews were conducted with a selection of participants, chosen because they were researchers, working together within a cooperative research centre.