Dev Patel is just as wrong for Sir Gawain as he as for David Copperfield, but it's not his fault that The Green Knight is an incoherent mess; the responsibility lies entirely with writer/director/editor David Lowery. Early on in the film, King Arthur (Sean Harris) tells Gawain, "Tell me a story about yourself so I can get to know you." Gawain replies that he has no story to tell; two hours later he still doesn't have one save for a few disjointed episodes that ultimately equal less than the sum of their parts. Poor time management is another issue; it takes the movie a very long 15 minute...