In Silo 17, Juliette pores over the books and tins Solo has collected and is astonished by how much knowledge they contain. Solo explains that the books are not meant to be read straight through; to him, they are a physical backup of knowledge, like a backup to damaged servers. Juliette, who has spent her life inside one silo, feels both ignorant and unsettled by how much Solo understands.

Solo leads Juliette into another room cluttered with trash and old food cans, where large diagrams and maps hang on the walls. He shows Juliette a world map and tries to explain the scale of the outside world: vast landmasses, even larger bodies of water, and the tiny insignificance of the silos by comparison. He then points out a grid of circles representing dozens of silos, identifies this one as Silo 17, and places Juliette's home somewhere nearby, probably Silo 16 or 18. The revelation overwhelms Juliette, because it confirms that humanity exists in many separate silos and that their world is far larger than she imagined.

When Solo casually mentions that he once heard from Silo 1, Juliette immediately focuses on the possibility of communication. Solo explains that the contact happened through wires, not by radio, and that the other silo called to check in. Juliette presses him for details, because communication with another silo could change everything she understands about who is in control and what information is being hidden.

Solo then shows Juliette a silo schematic marked with power and communication lines. He explains that Silo 17 no longer produces its own power and instead automatically draws power from other silos. When Juliette angrily asks what else he has failed to mention, Solo also tells her about the buried digging machines that created the silos, but says they no longer work and that flooding blocks access below. Juliette briefly hopes the diggers might offer a route home, but Solo dismisses the idea.

Juliette insists that her people need to know about the other silos and the world beyond them. Solo replies that someone in her silo already knows, and this makes Juliette realize that the hidden knowledge she has uncovered must already be in the hands of the leadership in IT. She understands that Bernard and others like him have deliberately concealed these truths for generations. With that realization, Juliette demands that Solo explain exactly how the wires work, because she now has someone she desperately wants to contact.