Your ancestors called it magic and you call it science. Well, I come from a place where they’re one and the same thing. My father explained it to me like this, that your world is one of the Nine Realms of the Cosmos, linked to each other by the branches of Yggdrasil, the World Tree. Now, there is Midgard, which is Earth. This is Alfheim. Vanaheim. Jötunheim. And Asgard. And that’s where I come from.