Calyptra, like the planet that occludes the star, or the Doylian dog that fails to bark, can be identified only by its absence. Even the name, I think, must be a mask...
Madness string 111999
Some of them are intentional from the writers, and some of them are just what people see in it. Cinema is art anyway and just as much of art is about what you take away from it or how you personally interpret things as it is about the artist trying to convey any particular idea or emotion. Art is as deep as the thoughts and emotions it inspires in you.