Newborn ducks will take on the characteristics…

Newborn ducks will take on the characteristics of the first animal they see. If the first animal they see is a human, then they will think they’re human and grow up thinking they’re human. This is called “imprinting” and it’s the natural instinct to follow the first thing they see.

Movie trailers were used to be shown…

Movie trailers were used to be shown after the movie, which is why they were called “trailers”. That practice did not last long, because patrons tended to leave the theater after the films ended, but the name has stuck. Trailers are now shown before the film begins.