Some books do have versions (textbooks et al), some books are out-of-date as soon as they are published (statistics, science). Many would benefit from a reducti

Some books do have versions (textbooks et al), some books are out-of-date as soon as they are published (statistics, science). Many would benefit from a reduction in lines and becoming more concise. Some are a jumbled mess that's basically useless, but nobody wants to update them.