10 Movie Mistakes That Became Canon
6. All The Editing "Mistakes" - Shutter Island
Shutter Island is easily one of Martin Scorsese's most mainstream-skewing movies - if not his absolute most - so it tracks that it's also his film that's been put under the most scrutiny for being filled with "mistakes."
Oh-so-many armchair continuity supervisors online have called out the film for its uncharacteristically rough editing, most often pointing out the sequence where U.S. Marshals Teddy Daniels (Leonardo DiCaprio) and Chuck Aule (Mark Ruffalo) interview a patient at Ashecliffe Hospital, Bridget Kearns (Robin Bartlett).
In one shot, Kearns is seen drinking a cup of water except... there's no glass in her hand if you look closely, yet in the next shot it's actually visible.
Even if you very generously assume that Scorsese was going to CGI the glass into the shot later on for some reason, isn't it far more plausible that this was a case of a master filmmaker and his collaborating editor of more than 50 years straight-up screwing with the audience?
Considering there are other strange editing and continuity choices through the film, it was clearly a case of Scorsese trying to keep audiences on their toes while approximating Teddy's own slipping sanity.