I guess the point is, not to take much note of people's reactions from the movie as a whole, good or bad. It's a very rough cut of the film and leaves much to be desired. It's more a tool for the filmmakers to gauge the path they are on and what is working and what needs adjustments. I remember going to a test screening for a movie with Tommy Lee Jones and Sam Jackson. Can't remember the title at the moment. But it was missing a whole lot of stuff. There wasn't any cgi of course but there were sections of the movie that didn't have music. Missing sound effects here and there. Even some weird edits. Months later I saw the movie as a finished product in the theater and there was a tremendous difference.