"I've found that the more experts you have on a movie, the less control the director has"

John Frankenheimer's quote recommends that when a movie has a great deal of professionals involved, the director has less control over the job. This might be because the experts have their own concepts and viewpoints about how the film ought to be made, and the director might not be able to make decisions that go against their recommendations. It could also be since the director has to take into account the viewpoints of all the professionals, which can be challenging to handle. This might lead to a situation where the director needs to compromise on their vision in order to satisfy everybody involved. Eventually, this quote suggests that when a motion picture has a great deal of professionals included, the director's control over the task is lessened.