My experience over the years with working with people who are not actors or not trained actors is that you have to get to know them well enough to see what they have that's translatable onto the screen.
Steven SoderberghPeople like Chris Nolan are shooting isolated sequences in IMAX. Those cameras are the size of a Volkswagen.
Steven SoderberghTo me the directorโs job is to leave it in better shape than you found it, literally.
Steven SoderberghThe brief flashbacks are sun-kissed, summery and optimistic. It's the only place in the movie you will see red, yellow, orange, or any vibrant colors.
Steven Soderbergh