That was something nopony thought to ask when she was younger, Masquerade only considering the question herself after her liegelady wondered it aloud one evening. The oldest books in the great library of the Crystal Empire often had blank pages when it concerned the earliest histories of the empire. Paragraphs would fade to blank halfway through the page before the book returned to normal several pages later. No amount of magic could discern a reason as to why. It was as if somepony had simply went back and prevented the words from ever being put from quill to parchment. 