It's a little like a conversation. I can be in tune with these sorts of devices and ask them what I'd like to see. A bit like how you had the images in your head to make the ice sculptures and your magic made them so.

( Probably not the best comparison but it might be serviceable enough. At least he isn't completely freaking out, which would have been valid. Android tricks could catch anyone off guard, let alone someone like Anders. She has to give him a grateful smile for the way he's taking it all in his stride. )

To some extent, yes. Say, for instance, you wanted to recall a performance of something you'd seen. I wouldn't be able to show you that unless I'd seen it too.