For a feature script I'm writing, there is a twist. This is not the script I was asking for a logline before, so there is no confusion. I have a scene in mind that is a red herring scene to throw the audience off track, so the twist will be less predictable. The plot will make sense if I didn't have the scene, and it's really mainly there to serve as a red herring. Writers have said that if a scene is unnecessary I should delete it, but movies like The Usual Suspects and maybe even Memento have red herring scenes, that even if they weren't there, the plots would still make sense. So does the guideline still apply?