You're totally right. Copy-editors make the book readable on the sentence level, editors make it readable on the chapter level... The work done by an editor of

You're totally right. Copy-editors make the book readable on the sentence level, editors make it readable on the chapter level... The work done by an editor of a publishing house in the process of producing a book, is much more than the work done by project managers in the web world, yet it seems this is increasingly the tasks asked of them in industry. What was previously the job of giving constructive feedback to the author has now become a project-management+coordination+marketing position and thus less time for constructive feedback is left... to the point where perhaps contracting a knowledgeable person to be your editor rather than hoping to get your 10-minutes of attention from a mainstream editor is the better strategy. Note: Friends are family are not the best editors: you share too much common baggage so they will understand and find logical certain parts in your writing that readers at large won't.