"There's a very important principle in cinema that most of the people who work in movies, or who seriously studies the craft, understand, but that somewhat eludes the casual viewer: a good screenplay is meaningless in the face of bad execution.
Meaning, having a great story is far from enough to secure an actual great finished film; the power of a picture is almost completely dependent on a filmmaker's skill with cinematic language – a narrative can only be as compelling as it's director is talented.
This is a fundamental truth of any genre, but it's most evident with horror, in which no amount of intelligent, competent writing can compensate for the lack of a supreme element of terror: atmosphere. After all, that chill in your spine that only the best horror movies can cause exists from the cumulative effect of a well-constructed atmosphere."
