> "It is possible they could develop the teachable talents, yes. But there are still some physical issues. There's no delicate way to discuss this, so I'm just going to be blunt about it, and preemptively ask for forgiveness should I touch a sore spot. You weigh very, very little. When I first carried you around yesterday, you did not slow me down very much at all, and it really felt like I could have just slung you over my shoulder with not much effort. Were you acting as dead weight, I could probably move you around with one hand, whereas I would likely have difficulty moving a human or a youkai around with two. I expect this is an important factor in something I noticed earlier in the library; you make practically no noise when moving around. I saw you running, but heard no real footfalls. Certainly not the thump thump thump I would expect to hear from someone such as myself were I running around somewhere. In addition to this, unlike humans and youkai, you do not appear to need to breathe, which is another noise advantage you have. Inhaling and exhaling can be very audible in an otherwise quiet environment. Staying out of sight could possibly be overcome with enough effort and training. Staying silent? Those are physical limitations, rather than mental ones."