How does the Messenger from Corinth help the old servant remember him?

The Messenger from Corinth helps the old servant remember him by recalling shared experiences with their flocks. This moment is significant because it taps into their joint history and familiarity with the common tasks of tending sheep and livestock, which would evoke memories of their time together in Corinth. Such shared experiences foster a sense of recognition and connection beyond mere names and familial ties. In the context of the play, this recollection serves to bridge the gap between the past and present, making it easier for the old servant to acknowledge the Messenger and recognize their relationship, which plays a crucial role in the unfolding of the plot. This kind of personal memory is often more impactful than abstract discussions of family ties or travel, as it connects them on a practical, relatable level.