I've been thinking for some time that our greatest gift and power to observe reality is inference, i.e. our ability to infer things from the data we study.
That is to say, facts alone aren't nearly enough, the way we discern truth is by thinking about them: connecting them to the widest possible array of our knowledge about the world, and experience with the world. This means our capability for recognizing truth ("receivership capacity") depends on the quality of our being (the sum of our knowledge and experience, and how practiced we are inferring/thinking about it all).
For example, think about how difficult it is to study history: seldom do the "facts" speak for themselves. Historical actors don't often tell us exactly what they were up to and why. And even when they do, we know that they might be BSing us for all kinds of reasons, hiding the truth. Or they themselves don't see the whole picture, are misled, self-deluded etc. So even if we have a source that directly names motivations, background etc., we can never know. The only way to make (at least preliminary) sense of what went down in history is to infer it based on literally all we know about everything!! (As a crass example, think about future historians reading Trump's tweets!)
Another good example are the Epstein files. Notice how some pundits have come out and declared that there's no real evidence in them, and no smoking gun. Which is true at some level. But even if there WERE a "smoking gun statement", that would still be no conclusive evidence, because you never know if Epstein or whoever was just BSing. Like with the statement in one of the mails that said "I give you permission to kill him" - this could mean all kinds of things, maybe just "exclude this guy from the negotiation process". That's why you'll never convince anybody based on such "facts" - the power lies in inference: someone who knows a lot about the world, has studied and thought about all of that for years, will infer a lot from these files, immediately recognizing the big picture of what's going on here.
So in other words, the "muscle" the Cs talked about is our ability to infer, to discern. THIS is our "soul vision", our connection to reality. Of course, research and fact-gathering are necessary for this process, but we should never just repeat someone's take, someone's story. We need to practice and learn inference and discernment ourselves.
I even suspect that at the higher densities/levels of being, it is not so much that we will "see all the hidden facts laid out directly in front of us", but rather that our power of inference/discernment has become so great that we "see" the hidden structures and machinations in such a clear light that there can be no doubt about it.
Since we need to train our muscle, asking the Cs "closure questions" can be extremely counterproductive: the Cs' answer stops our thinking process; we think we know the definite truth and then cease to bring our whole being to bear on figuring out what's going on.
And since the Cs are "us in the future", perhaps our muscle-building and finding of answers might even be necessary for them to be able to answer us in the first place!
What's more, they hinted that us practicing this might literally change reality, which makes sense: if life is a school, and all there is is lessons, then reality will be adapted to best "teach us". So naturally, the degree of humanity's capability to infer and discern and therefore observe reality truthfully (or not) will have an impact on how our reality/school will be "designed". And since we know that even a few people who are at the forefront of this process can be important in that regard, it follows that us using/refining our discernment instead of running to the Cs to satisfy our curiosity, can change how the Universe decides to move forward.