Answer: They want there audience to infer what will happen, to understand it themselves. That way it will make for a better read, rather than being told it, a reader can piece together themselves and fully understand the words being said, a great writer will never reveal their plans just as a great magician never reveals their secrets. Writers want you to explore your mind, and find connections bit by bit. This makes for a wonderful book.
Explanation: I love reading it's a passion of mine, i hope this helps