Quality of experience¶

Firstly, the human has limitation of its physical capacity with the eyes and the ears, we cannot ear and see everything therefore we are not able to see/ears the imperfection introduces by the channel of communication.
Secondly, with the improvement of movies qualities, we are more and more reluctant to watch a movie in bad quality (480/576p) while 10 years before that was the the movie's quality.

Therefore the table shows us that during the previous years the quality of a movie increase more and more because the quality of a movie available in the theaters increases too.