We have seen in the preceding chapter that it is rather difficult to remember how long an event or an activity had lasted. Similarly, it can be difficult to identify when exactly, or how long ago, an event has occurred, and this includes the chronology of events in one’s own life. The question is difficult, because there does not seem to be any temporal stamping on our numerous memories, or direct temporal path, when we navigate in our memory of the past events, to trace the moment of their occurrence.