Machines are so ubiquitous to her. It's hard to imagine them not existing, even if she knows, intellectually, that it must be true. How to describe them to someone who had never seen them?

"The machines are creatures of metal," Aloy says. "They're huge, and dangerous to hunt, but you can find valuable parts on them to make things out of." She holds out her spear as an example, which is certainly a fairly sophisticated weapon.