Realism is always subjective in film. There's no such thing as cinema verite. The only true cinema verite would be what Andy Warhol did with his film about the Empire State Building - eight hours or so from one angle, and even then it's not really cinema verite, because you aren't actually there.
“When I did plays in high school and college, I never remember memorizing my lines, but once I had blocking, I had all my lines memorized. Once I had movement associated with words, it was fine. Before I had blocking, it was just text on a page. Once it became embodied, it was much easier.”