7. Alien
Movies about space and aliens hardly ever make any sense, mainly because very few people have actually experienced life outside of our Earth, and aliens have yet to make contact with us.
In one of the scenes, Ellen Ripley (Sigourney Weaver) manages to remain in the ship by holding onto a ladder after the ship’s airlock door was ripped open. In reality, Ellen would’ve lost consciousness due to the huge amount of force. Later on, she would’ve suffocated.