The question was so stupid that he would have stared had he not been better trained. How hard was 'we can't' to understand? "Mostly because they can only be removed by those whom they apply to," he answered, repeating his words though doing it with a casual smile as if he hadn't said the same thing less than a minute ago. "Anyone who tries go mad," he added in answer to the Dark Lord's other question. "We could of course blow up the shelves they sit on but that would risk causing more damage than we want."
"Besides," he continued casually as he followed the Dark Lord through the room, a green light floating in front of them. "There is nothing that prevents a prophecy from stretching hundreds of years forward in time. It's extremely rare, but it does happen on occasion."
He looked on as a black shield covered the Dark Lord and continued to speak once they were once more following the green light. "As for hearing them, anyone close when the orb is opened can listen," he said. "It is only the act of removing it from the shelf that is restricted."
Once more he waited while the Dark Lord disappeared behind his black shield, and when the Dark Lord reappeared Theo took the list handed to him, glanced at it, folded it and put it in his pocket. "Certainly," he answered. He was utterly tempted to ask how many people the Dark Lord thought entered into a highly restricted room whom few knew about which contained objects that could not be touched, but refrained, nodding instead. "I understand," he answered, knowing it only meant it would be business as usual.
He lead the way to the Death Chamber, taking a few steps closer to the bottom. He kept his distance, highly respectful of the magic contained in the artefact at the bottom of the room. People had been lured into it by listening to the voices, other had spent their lives listening and studying it forgetting to live in the process. He issued no warning to the Dark Lord, if he wanted to step through the veil they'd all be better off as far as he was concerned.