This chapter is devoted entirely to the problem of unity-at-a-time. Several accounts of synchronic phenomenal unity are considered. One such is the doctrine that this mode of unity arises when phenomenal items are located in a single phenomenal space; another is the doctrine that it is a product of phenomenal items falling under an act of pure awareness. These are all found wanting. It is argued that synchronic phenomenal unity is best understood as being the product of a primitive inter-experiential relationship, co-consciousness.
Keywords: stream of consciousness, synchronic unity, pure awareness, phenomenal space, co-consciousness