compare the edited version from its original, do you agree it is an easier explanation of the former? This is what English is all about. To some people, the first or original copy might not prove difficult to summarize, but to others, the second or summarized version is easier to understand. Which ever one appeals to you they both carry the same message. If you want to summarize a passage, you take each paragraph at a time, go through it and try to pick out the message, then coin it in your own 'easy to understand' language. Pick up a passage from a book, and try to summarize it without altering the meaning or message. Good luck to you.