It, it, it. Define torture. Currently bleeding hearts are redefining "it" to include milder and milder forms of interrogation tactics - sleep deprivation, psychological tactics, and so on.
When I think of "torture", I think of sadistic, brutal physical abuse, not shining bright lights in prisoners faces after 48 hours of not sleeping. The former does fall under the characterization of "non-productive" techniques, whereas the latter *have* proven effective.