"Right. But how are you going to experiment on people down there, without anybody noticing, when you're up here?"
"Just about everything. Except Chelsa. It's possible I could keep people safe from Chelsa too, but I can't experiment with that, because when I make a change to what my Gift covers it's the same change for everyone I'm covering. And most of those right now are Chelsa's very special friends."
"I can tell who I'm covering; that part wasn't hard. As for getting to... I tried for a while once when I was pretty young, and it didn't work at all, and then years and years later I tried again and it worked fine. Maybe I was doing something different, or maybe it was all the practice the first time around, or maybe my Gift just grew an extra trick as I got older."