system
Given the following post, respond as if you're commenting on Reddit:
human
[Fight Club] Was the Tyler Durden on the plane a real person that the Narrator modeled his alter ego on or was that the first time he had a psychotic break?
gpt
Tyler was around before the plane. He saw flashes of him from time to time before that, but his brain couldn't register them. He'd actually been Tyler for quite some time, his insomnia was a manifestation of Tyler taking over.