 In its synchronic form, we have suggested that a natural way to think of unified consciousness is in terms of joint consciousness. Diachronically, unified consciousness has an additional feature; it requires retention over time, specifically, retention of earlier experienced contents as one experienced them. What the retention crucial to diachronic unity consists in is a matter of some interest. It is tempting to assume that it is a kind of memory. However, as Husserl already told us, there is reason to be sceptical of this approach. There is a difference between experiencing a succession from time 1 to time 2 and merely remembering experiencing what happened at time 1 while experiencing something at time 2. Dainton captures Husserl’s point by noting the difference between “immediate and represented experience—remembering or imagining hearing a tone is not the same as directly experiencing the tone” (Dainton 2005: 155; Dainton cites Husserl 1928).