If everything is laid out in a script, then what is the use of director in a movie?
closed as too broad by MattD, Walt, Catija♦, Pᴀᴜʟsᴛᴇʀ2, Meat Trademark Oct 24 '15 at 0:30
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The director of any enterprise is the one who holds a vision for how the finished result will look. In film, this means seeing that individual scenes will meld together into a cohesive film that has the visual and emotional impact that was intended. There are myriad details to tend to in any given scene - lighting, camera work, scenery, emotions of actors, dress, sound... and then there's continuity between scenes. The number of details and decisions required to make a 90 minute film must number in the thousands, and very little of that is laid out in the script.