What I've known so far concerning the usage of past perfect is that this tense will be used when someone did something and he/she wants to talk about it in the present or the event itself still holds in the present (that'd be my best definition of its usage).
However, there was a sentence from my book that has confused me:
That argument is out-of-date in a modern technology. Our position has always been that we should encourage technology.
I feel there's a missing word there i.e.
Our position has always been [something] that we should encourage technology.
Why did the writer leave that something out if my prediction is correct? Did he/she try to introduce their position since x?