10 Sci-Fi Movie Mistakes You Never Noticed Before

10. The Thing - Breaking Down The Door

To be fair to John Carpenter, the man had a lot of plates spinning when he filmed 1982's The Thing.

Featuring some of the most impressive practical effects work ever committed to film, the intense Antarctic-set paranoid sci-fi horror sees a small crew of scientists infiltrated by a body-hopping alien monster. The tense plot works thanks to some fantastic character work by the sparse cast, but it's Rob Bottin's incredible effects that are the star of this show.

Endlessly impressive, these gory innovations saw the technician hospitalised for exhaustion due to the incredible hours he put into them during shooting.

So it's understandable that some small background details were ignored during the shoot.

Take the scene late in the film wherein Childs axe a doors to bits, breaking a huge hole in its centre.

When he comes back later?

The hole is tiny and in a totally different area, prompting him to hack at the door all over again. Wouldn't have been necessary if you'd just stuck with the same prop you used in the earlier scene, Childs.