The phrase in 3-D has been used time and time again, especially recently, in many live action or 3-d modeled animated films. This visual interpretation of entertainment has even been said to move towards television and even pornography. This form of perceiving things visually is actually one of ten types of cues, with in the realm of depth perception. Parallax is a cue that falls under the Monocular cue, which provides the depth of information, when viewing a scene with one eye. Movies and televisions display technologies that only offer motion parallax-based depth cues, which allows your brain to only process one maybe two other cues out of ten to watch a 3-d film. Take the movie Avatar for instance, it makes you ignore several other cues in your brain, when applying this to a movie is fine but applying it to a tv for hours can really alter one's depth perception.