To combat new drugs, such as “Bath Salts”, specific new laws are being passed that contain catalogs of molecular compounds that are now banned in the US. As soon as a new law is passed, chemist are able to change the compounds to be a different on a molecular level, but still have the same psychopharmaceutical role. The assumption is that this new compound will eventually get added to the banned list, however the scope of these derivative compounds are huge, from the hundreds to the thousands depending on the compound.
Books have been the subject of interesting and important discourses for philosophers for very long time. Impatient time of us can ignore but can't argue that "A room without a book is a body without a soul" (