Is the answer "unappreciated and extensive labour by the film editor who saved the first movie from its borderline-incompetent director in the editing bay then was effectively written out of the history of Star Wars by her vindictive soon-to-be-ex husband who directed the movie and who only got more vindictive when she won an Oscar for her editing work on it but he didn't get an Oscar for anything"?
Is the answer "unappreciated and extensive labour by the film editor who saved the first movie from its borderline-incompetent director in the editing bay then was effectively written out of the history of Star Wars by her vindictive soon-to-be-ex husband who directed the movie and who only got more vindictive when she won an Oscar for her editing work on it but he didn't get an Oscar for anything"?
https://youtu.be/olqVGz6mOVE?si=wyVvuCOso24IZHso
TL;DR: Marcia Lucas didn't do anything editors don't do on every film ever, and the "saved in the edit" video is garbage.