And action makes them interesting. We structure it in scenes. Critics think in terms of story and style. Writers think of scenes. That's okay, because the cinematic technique borrows its sense of scenes from written fiction.
Scenes can be long or short, crammed with activity or contemplative.
But all of them fill some fundamental role in putting the story forward. His heart just give out. But she isn't thinking about the dear old woman who has died, but rather the grim task of breaking the news to young Doctor Turk, who had never lost a patient before. He grimaced at the sight of the bloated face and noted sadly that someone had hacked away the soldier's hands, had slit his belly to let his guts heap on the ground. And on and on and on.