Only two hundred years? Well, that'd explain why Arcee's never heard of them. They're relatively new to the scene. She doesn't know who the quarians are, but she figures some organic race. It's always the organics making the advanced AI.

A compound AI, though. Arcee's never met one before. So far, it's...interesting. She studies Legion curiously, as though debating how to answer.

"Yeah, you could say that. We've been at war -- with each other -- for about seven thousand years. But we tend to keep a lot of our tools in our bodies. We transform. It's kind of a thing."