[ sort of forgot that he was speaking, caught up in the urge to record his knowledge in supplement to dean's work. ]

Crossing the borders of worlds isn't theoretical, it's very possible. You and I have both done it multiple times. The fact that we haven't found the right spell [ since we know there is a spell, just not one we're willing to recreate ] or the working portal isn't the same as "it has never been done."

[ the pencil stills, taps twice, then he holds it out to dean blunt-end first. ]

I meant, something more akin to reversing the stream of time. Undoing what's already come to pass. Or, or creating a new world, a realm beyond God's creation.

[ eyebrows furrow. ]

For all we know, maybe that's how this place came to be.