Film noir heavily relies on elements like flashbacks and narrators to enhance storytelling and character development. These components are iconic in creating the genre's signature mood and tension. Contrary to this, visual gags and evil scientists do not play significant roles in film noir. ;
The two important ingredients in the film noir formula are flashbacks and narrators, which enhance storytelling and character development. Visual gags and evil scientists do not play significant roles in this genre. Therefore, the correct options to check are flashbacks and narrators.
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