Talk:Petrifaction/@comment-4323233-20111029114754

WOuld the Weeping Angels qualify? They're evolved in such a way so that any observation by a living thing turns them to something that looks like stone, but isn't. (The term The Doctor uses is quantum locked. Even when they're stone-like they can still kill you. Anything that holds the image of an angel is itself an angel. This includes your mind if you stare at one for too long.)