ABSTRACT
The primary purpose of this chapter is to sketch out the key practice and theoretical issues that are explored in the subsequent chapters and sections of this edited volume. We are aware that in framing the theoretical and conceptual questions we are seeking to establish a structure and order to a debate that may (actually) be inherently unstable and disorderly. We are also aware that as we write (in the autumn of 2008) we are situated in a time of transition and upheaval and that it is diffi cult to anticipate how long this phase will be and what the medium-to long-term consequences are likely to be.
