[adrianmonk]

Fact: the overwhelming majority of users aren't going to type a search query that completely specifies the information they are looking for.

The user isn't going to supply the very detailed information necessary to objectively filter down (and rank) everything on the web to a set of relevant results, without the search engine making any judgment calls. That would be a ton of work, more than almost any user would want to do. (And many users wouldn't have the technical skills to do it.) It would be like going into a restaurant and handing the chef a recipe for everything in your meal, down to the level of detail saying the vanilla extract in your dessert should use this type of vanilla bean, infuse it in this type of alcohol, and for this long.

The corollary is that any useful search engine will have to guide you a bit. It will take the incomplete specification you gave about what you want, and it will fill in reasonable guesses about everything you didn't say about what you want (but that it needs to know to find it), and then it will give you an answer that's useful.

Obviously, it's ideal to make this guidance objective or unbiased, but how do you even ensure that you're doing that? The whole point here is that you are making guesses about what the user prefers. It's not useful to guess randomly. Objectivity is a good goal, and you should avoid any unnecessary subjectivity, but the idea that you're going to be totally objective seems like a fantasy.