 Frank Spotnitz said of the episode 's origins , " We 've destroyed all the stuff about Mulder 's father , the project , and the Syndicate . All the things that had sustained us for six years were suddenly gone . We had no crutches . From that point on , every time we sat down to write a mythology show , we knew it was going to be a completely different challenge . " Chris Carter saw the episode as a transitional episode , stating " I felt that , with " The Sixth Extinction " , I was just playing a supporting role and that the episode , essentially the middle episode of a three @-@ episode arc , was just a transitional episode to get us to ' Amor Fati ' , which was really less about the mythology and more about Mulder 's choices in life . " 
 Frank Spotnitz said of the episode <a href='null_genetive' title='1'><mark>'s</mark></a>origins , " We 've destroyed all the stuff about Mulder <a href='null_genetive' title='2'><mark>'s</mark></a>father , the project , and the Syndicate . All the things <a href='null_relcl' title='3'><mark>that</mark></a><a href='been_done' title='4'><mark>had</mark></a> sustained us for six years <a href='uninflect' title='5'><mark>were</mark></a> suddenly gone . We had no crutches . From that point on , every time we sat down to write a mythology show , we<a href='been_done' title='6'><mark></mark></a> knew it was going to be a completely different challenge . " Chris Carter saw the episode as a transitional episode , stating " I felt that , with " The Sixth Extinction " , I was just playing a supporting role and that the episode , essentially the middle episode of a three @-@ episode arc , was just a transitional episode to get us to ' Amor Fati ' , which was really less about the mythology and more about Mulder <a href='null_genetive' title='7'><mark>'s</mark></a>choices in life . " 
Frank Spotnitz said of da episode  origins , " We 've destroyed alll the stuff about Mulder  father , the project , and tdaSyndicate . All the things done sustained us for six yrs was suddenly gone . We had no crutches . From dat point on , every time we sat dwn to write a mythology show , we done knew it was goin to be a completely diff challenge . " Chris Carter saw the episode as a transitional episode , stating " I felt that , witt " Thdaixth Extinction " , I was just playing a supporting role and that the episode , essentially thedaddle episode of a three @-@ episode arc , was jus a transitional episode to get us to ' Amor Fati ' , which was really less bou the mythology and more abbouulder  choices in life . "