Bit of both. [ He appreciates the question; it's a good one, shows knowledge of the basics. John tips his head in thought as they walk. ] I use thanergy like everyone else, but I don't have to source it externally... no dipping into bones, no grabbing local deaths. I mean, I can, but I don't need it. That's small potatoes, you know?

[ What he finds much more interesting is the idea that this kid has dipped further than him into the local afterlife. John looks at him in frank, open surprise, and then nearly-incredulous attention. ]

You've been to the cave? Or you were working at range from the surface?