"Types" of AI. There're smart AIs like me, and dumb AIs that aren't self-aware. They mostly fake it pretty well, though.

[And then there are the Freelancer AIs, which Cortana doesn't want to get into.]

I'm considered a person here, but not at home.

[She shrugs. Cortana's relentlessly pragmatic and her legal status as property hasn't ever bothered her, because she's very very expensive property who spends all her time around people who don't think of her that way.]