Brent Spiner suggested that he play Dr. Soong when producers were having difficulties casting the role.
According to Brent Spiner, much of his performance was drawn from sibling rivalries he had with his own brother during childhood.
The dinosaur skeleton head seen in Dr. Soong's laboratory was rented from the Museum of Natural History.
Brent Spiner plays three roles (Data, Lore, and Dr. Noonien Soong). All of the scenes where Spiner acts opposite himself were filmed on a closed set to help him feel more comfortable.
This episode was nominated for an Emmy Award for Outstanding Achievement in Makeup for a Series.