I’ve never thought much of the motion picture scenario. It has its uses, I suppose, as a rough sort of guide to the actual shooting of a movie - and of course the thesps need a vade mecum from which to memorize their lines. But beyond this, the utility or interest of a motion picture script seems nil. It is not a literary artifact, not having been written for publication and therefore never attracting the grade of author who would merit it. Scenarists are inevitably amateurs, boobies, and hacks. Their scripts are invariably shoddily bound and shot right through with errors of spelling and punctuation - not to speak of the lapses of taste. At best the scriptwriter is a student of writing rather than a writer per se; he is like a child scraping away at his scales on the violin. No sensible person would listen to this grating chatter by election, and I am far too old to feign enthusiasm for such recitals.
Roderick Jaynes, in his introduction to Collected Screenplays 1 by Joel and Ethan Coen.