This article is a short reaction to the comments of Vergragt (Found Sci, 2012) and Bos (Found Sci, 2012) on my article “Sustainability transition and the nature of technology” (Paredis in Found Sci 16(2–3):195–225, Paredis 2011). I start by situating current transition research in the sustainability debate. The relation between the two is simultaneously specific and vague: specific about processes at work during transitions, vague about the content and direction of the change. I then move on to a discussion of (...) how a better conceptualisation of technology could strengthen the transition framework. I want to thank the two reviewers for their critical remarks, that stimulated me to better explain my position. (shrink)