No, we will never be 100% correct because, as I have said before Please Register or Log in to view the hidden image! , we cannot know everything about the universe.
Indeed, I too see no glorified point in between these two points where could lie "free will". Some will argue the ability to choose by claiming that given 2 or more options they "could" have gone either way, but they go one way (or none) and they would go that same way if that event of deciding on an option (or deciding against any option) was repeated via a time loop a 1,000 times. Again, it is only vast, incomprehensible complexity that allows for the romantic illusion of a free will. Affirmative, and it is the incorporation of holism into our world view that will allow us the understanding of causality as the vastly complex yet simple system that removes the illusion of a free will. People simply need to think in the big picture to comprehend the smaller ones.