[ If Gabriel were in Stephen's shoes, he suspects he'd be having just as hard a time accepting that his eyes weren't telling the truth. Especially after the Tower, when everything in those cells blurred together. So he tries to keep it focused on the now and inching out those differences. ]

I came from the back? So maybe I came through the wall, from your perspective? You want me to try it again, see what it looks like to you? You'll have to point where the walls are, but if I walk through them instead of around them- I'd say that's a point in favor of me seeing reality.

[ He starts to stand, ready to try this out. ]