 Established with the second series episode "Love & Monsters" because of the production schedule, it has become a tradition that continued with episodes such as "Blink".MacRae enjoyed exploring Amy and Rory's characters and their past, as the Doctor was "always to a certain extent mythic" which limited what could be explored with his character.In one draft of the script, the scene near the end in which Rory and the two Amys race to the TARDIS did not include Rory in person; he was watching the scene from the lens.