An internal twitch. If that is the case, then he might as well make things plain or it's liable to keep sneaking up. "I'm guessing time travel is a more achievable thing where you are from. It's nigh undoable in my corner, about as forbidden or impossible a magic as resurrection. But that does not stop desperate people from trying. If I had to guess?" He taps his temple again. "Universes where one is common might be those where the other is less so. There are people who can see threads of fate where I come from. Time as it flows, will flow, can flow. Might not always translate the most clearly, but that is the limitation of the mind. Perhaps you either get a free vantage to look, or you move within it with greater ease. One or the other."