ABSTRACT
This chapter explores a series of the different ideas that have proved most relevant to date and a sense of the evidence base surrounding these concepts. It sets out the broad range of different boundary-related concepts, to describe these and examines research relating to these various different ideas. Technological fixes, such as electronic records or shared database, have similarly struggled to aid effective boundary work. Boundary objects make a significant and increasingly frequent appearance within the literature on collaborative working. Boundaries can be trajectories in an assemblage of public relations. The boundary object therefore acts as an associate in the becoming of new possibilities. Boundary objects are those things that bridge social and cultural worlds. Within the geology literature the terminology of boundary events is used quite broadly to refer to particular sets of occurrences that took place on the limits of one era of time and another.
