  The Cinematic, Retentional and Extensional models (as sketched in §1.1) offer different and competing accounts of the structure of consciousness over those short intervals – perhaps no more than a second or so, perhaps less – during which we seem to be able to experience change and succession. Before moving on to explore these models in more detail, it is worth pausing to register in a clear and explicit way some further important theses and distinctions; some of these we have already encountered in one guise or another, others are new.