Meghan mentions that she had attended a performance of Tom Stoppard's 1993 play "Arcadia." "Arcadia," like The 4400 (2004) has a main character who is a precocious and intellectually brilliant little girl at the beginning and then abruptly grows into adulthood by the end. Both the plots of "Arcadia" and "The 4400" also concern skipping between different time periods in history, and a group of people in the future trying to gain insights into the past.