So I started thinking the other day more about blink but also about night crawler. Their ability is teleportation. I understand that Blink basically folds space to make her portals and Nightcrawler enters a demon realm and comes out at different points in our physical plane. My question is how exactly do they know where they're coming out at. I mean I've read that Blink once teleported people to the moon but how does she make her portals teleport to where she wants them to? Especially if she teleports to somewhere she can't see.
Also with NIghtcrawler how does he know where he will be when he comes out of the demon realm? What happens if somebody is standing where he teleports to?
Is there some sort of mental mechinism? Or do they simply have to think about where they want to teleport to.