Anchor: Once flight capabilities are established and demonstrated in a motion picture, they must be used consistently and logically throughout, without regard to the convenience of the filmmakers.
Entailed: If flight capabilities appear in movies, they should be shown consistently and logically.
Contradiction: It doesn't matter how flight capabilities are used in a film because a director's convenience is the most important thing.
Contradiction: Two people are sitting together.
Contradiction: I saw the ghost.
Contradiction: Home schooling is going to be outlawed. 
Contradiction: A human sitting