" For when a box is shut, you cannot tell what it might contain, so you might as well say it contains everything, because, really, it could contain anything, see? But when you open it, you affect what is inside. Observing something changes it, that’s a law, nothing to be done. "

― Catherynne M. Valente , The Girl Who Circumnavigated Fairyland in a Ship of Her Own Making (Fairyland, #1)