on Helping Writers become Authors:
Scenes are the building blocks of your story. As go your scenes, so goes your story.
If the scenes present a solid chain of deliberate structure, that’s what your story will be. But if too many scenes lack focus or dramatic impetus, so will the story.
Every aspect of scene structure is important. Any aspect that is accidentally overlooked can throw off the balance of the entire narrative. But of all the many aspects of scene structure, those that are among the most powerful are also the easiest to overlook: scene dilemmas.