A resposta é "ISH"
De acordo com o criador do Arquivo X , Chris Carter:
I'd always imagined revisiting it. I'd been thinking about it since Season 7. Parentage was something that I had wanted to have a question mark around it. That incident in that episode, I knew we would revisit since it was such a remarkable episode in that Scully was momentarily in league with Cigarette-Smoking Man. So it was sweet for me to be able to connect that dot from so long ago.
Acho que talvez tenha sido uma ideia com a qual ele brincou no passado e, finalmente, tive a oportunidade de trazê-lo de volta:
I think it makes total sense. The Cigarette-Smoking Man has affected Scully's life in so many ways and not the first time her physical body. Originally there was an implant and there was an abduction and Scully's actually been abducted, if you count them up, abducted eight times in this series. So he has been involved intimately in her life. This, though, is the greatest intrusion that we've ever told.