“…Carlile, 2002;Levina & Vaast, 2005;Gasson, 2006) boundary-work (Faraj & Yan, 2009) bounded activities (Huvila, 2012) Boundary related things boundary concept (Nolin, 2009) boundary constructs (Holford, 2016) boundary negotiating artifacts (Lee, 2007) boundary organizations (Shackley & Wynne, 1996;Perkmann & Schildt, 2015) conscription devices (Henderson, 1991) Different types of boundaries tangible, intangible; imagined and 'real' boundaries (Huvila, 2012) evolutionary boundaries (Madden, 2014) knowledge boundaries (Abraham, 2015) three-dimensional (Zhang & Jacob, 2013) We found that these new concepts seem to have a tendency to focus on elucidating boundary related activities, elaborating different types of boundaries, and explicating boundary related 'things' that, according to their proposers, are complementary to and have substantial differences with the notion of BO. A common denominator of these elaborations and extensions suggests that the notion of BO has felt too rigid, unspecific or 'thingy' to describe the particularities of the specific research cases.…”