Centuries ago, Germany came up with a way to keep books that contained "dangerous" information without releasing them to the general public: The Giftschrank.The word, a combination of "poison" and "cabinet," has a variety of meanings in different contexts. At its most literal, a Giftschrank is a space for storing controlled substances in places like pharmacies. Colloquially, it can refer to spaces reserved for all kinds of hidden and forbidden objects, ideas or stories.