to dream is to travel, between two points. but, if you wake up at the wrong moment, you could end up where you aren't supposed to be... se something you wouldn't want to see... things to consider: consciousness: do i know things i shoudln't know? actions: do i, or someone else, perform actions that are normally impossible? form: does something look like it shouldn't? is there some kind of anachronism going on? context: am i somewhere where it's impossible to be? how did i get where i am, where were i before, etc.