 In "Death of the Doctor" (a 2010 "The Sarah Jane Adventures" serial),<ref></ref> the Eleventh Doctor responds to a question from Clyde Langer by saying he can regenerate "507" times.Early news reports, before the episode was broadcast, suggested he would say there is no limit to the number of regenerations.<ref></ref> Writer Russell T Davies stated in an interview with "SFX" that the line was not intended to be taken seriously and is instead a commentary.He said that the "thirteen lives" rule was too deeply entrenched in the viewer consciousness for his throwaway line to affect it.<ref></ref> It is revealed in "The Time of the Doctor" that this was in fact false and that due to his various regenerations, the Eleventh Doctor was in fact his last incarnation.