You can probably relate to the scenario of working non-stop and exhaustively on a very extensive work project that takes you weeks, sometimes months—and in the case of cinema and other fields, occasionally years.

It takes planning, organizing, effectively getting the work done, and then, before you can call it finished, revising. However, it is very common that, since we spend so much time looking at the same project, no matter how much revising we do, some mistakes still slip unnoticed.

The situation described above is so universal that even professionals who are references in their field and famous worldwide can let a few errors go by without noticing. With movies, this has happened to big names, which, somehow, can make us feel a little better about our own mistakes because, after all, we are only human.

Below, you will check 9 errors that went undetected in big movies. Next time you watch any of these movies, keep an eye open to detect these mistakes not even the perceptive production crew noticed.