> The problem is information wants to be read and be free. Copyright is a wall around information that has already been thought of and recorded. Copyright isn'

> The problem is information wants to be read and be free. Copyright is a wall around information that has already been thought of and recorded. Copyright isn't a wall around information. Copyright doesn't prohibit anyone from taking the information in a book and presenting it in their own way. For example, you or anyone else can take a copyrighted book, extract the valuable information like mathematical equations and methods and data, write your own explanations of the information, make your own diagrams, write your own exercises for readers, and then publish it and sell it. Copyright won't stop you or anyone else from doing that, because copyright only protects expressions of ideas, not the ideas themselves.