She nodded. "Probably. And the other things is." She bit her lip. "I don't know. He's crazy abut the Doctor, clearly loves Jack, like me just fine. The old him sometimes seemed lonely even with us all around, sometimes, I don't want to know what the state he'd have gotten himself into if we actually left him alone for long. This one doesn't seem to have that problem, and that's good. But. I don't know how long he'd have to be alone before he got lonely, either. That's sort of offputting. Does that makes any sense?"