In this episode, Data creates a "daughter" android, Lal. As Lal develops, she starts asking questions about death, a concept she cannot understand. Picard is tasked with explaining it to her, and in turn, Data.
He describes death as the end of life and the cessation of all biological functions. He also touches on the emotional impact of death and how it can be a difficult concept to grasp.
This episode is significant as it explores themes of sentience, mortality, and the nature of life itself. It also showcases Picard's empathy and ability to connect with others, even those who are fundamentally different from himself.