"It's possible there are things I won't want to tell you even once I'm made aware that you don't know them and would like to. But I don't expect it to come up all that often."

And here is the room. It's medium-sized and cozy and has a little sitting area with a couple of armchairs and a round table. Mark sits.

"And now I'm close to certain that no one knows we're here or could listen in if they did."