Pulling Back the Curtain on the Wizards of Oz

The Wizard of Oz method is an increasingly common practice in HCI and CSCW studies as part iterative design processes for interactive systems. Instead designing a fully-fledged system, the 'technical work' key system components completed by human operators yet presented to study participants if computed machine. However, little known about how are interactionally collaboratively achieved situ researchers participants. By adopting ethnomethodological perspective, we analyse our use with voice-controlled vacuum robot two present. We present data that reveals such organised unpack coordinated orchestration work unfolds 'behind scenes' complete study. examine attend participant requests technical breakdowns, discuss performative, collaborative, methodological nature their work. conclude offering insights from application approach others communities using method.