Other mistake: When Ki-jung is making the fake diploma, the date she uses is June 16, 2018, indicating the movie takes place after then. In a later scene, when Yeon-kyo texts Ki-taek to meet in the sauna, the date on the text is June 12, despite being a later date. (00:11:20 - 00:44:40)
Parasite (2019)
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Directed by: Bong Joon Ho
Starring: Kang-ho Song, Sun-kyun Lee, Woo-sik Choi, Yeo-jeong Jo
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More mistakes in Parasite
Moon-gwang: Want to come down with me?
Trivia: Throughout the film, lines are very subtly used to divide the Kim and Park families. Ex. Walls, picture frames and other objects with vertical lines often appear between members of either family when both are on the screen. One of the earliest examples is when Mrs. Park is introduced, and we see her outside of a window. There is a very clear line in the window between she and Ki-Woo, implying a sense of separation. Instances like this are littered throughout the film.