Logan leads them to a simulated lab where he created 18 million different versions of James Delos before creating a copy faithful enough to replicate the real James Delos’ decisions in the park. Once the code was uploaded into a host body, however, it failed. He needed more information to understand why humans make the decisions they do. But as he searched, he came to realize that humans don’t actually make their own decisions, implying their lack of free will.

They walk into one of Delos’ memories: Outside the Delos mansion, they watch Logan beg his father for help one last time, and Delos turns his back on him, resulting in Logan’s death by overdose a few months later. The system explains that no matter how many versions he made of Delos, he always ended up at this same moment, that “the copies didn’t fail because they were too simple, but because they were too complicated.” Human cognition can be boiled down to an embarrassingly simple string of code. He shows them the complete code of James Delos in the form of a thin book, and Dolores presses him to lead them to her true goal: a vast library filled with books, the copied minds of all four million guests who frequented the parks since Protagoras began.

As Dolores starts to read the guest data, Logan explains to a concerned Bernard that Bernard himself had instructed Logan to allow her access, to give her a “competitive advantage” to survive in the real world. He also says Ford created a “virtual Eden” for the hosts to escape to, and they watch as a new server fires up and a tear in the fabric of reality appears in the valley: The Door is now open. Hosts that enter this gateway will leave their bodies behind, and their minds will live on in the Forge.