No, I wouldn't say that. I mean they could try to influence what sources I check first, but I'm the one doing the interpretation.

So summarization is interpretation but ranking and filtering are not. Most would disagree.

I don't think anyone can disagree. If you ask someone to give you an interpretation of the works of, say, Allen Ginsberg, or of the theory of relativity, and they come back with a pile of documents ordered in some fashion, you won't be satisfied because that's not what you asked for.