I got the impression he was making things up as he went along. [ David confides.

Still, he doesn't disagree with what Charles is saying either; he, himself, having been pulled into the Astral Plane himself once and very nearly stranded there. ]

Happens a lot, I'm sure. It's not like people are very forthcoming about what they can do, if they're even aware of it. Not like they're given much reason to be, either.