The perfect search result should be a small review of a novel, that briefly describes the author, the context of his work, the characters, then comments some important events from the book and gives a verdict.
The perfect result should be an answer to your question, but it should also give you pointers where you could find other information. The answer should be as detailed as you want.
The perfect search result is a page from a book, the annotations and its context.
The perfect search result could be a delicate sunshine, a chart, the smell of a fruit or an algorithm, a part of a movie or an advice.
The perfect search result is an automatically-generated encyclopedia page that gives enough information about a topic to satisfy your curiosity, but also references to the original sources of information.