(Before It's News)
The principle of least effort is a broad theory that covers diverse fields from evolutionary biology to webpage design. It postulates that animals, people, even well-designed machines will naturally choose the path of least resistance or “effort”. It is closely related to many other similar principles: see Principle of least action or other articles listed below. This is perhaps best known or at least documented among researchers in the field of library and information science. Their principle states that an information-seeking client will tend to use the most convenient search method, in the least exacting mode available. Information seeking behavior stops as soon as minimally acceptable results are found. This theory holds true regardless of the user's proficiency as a searcher, or their level of subject expertise
One might add to this and suggest that mainstream media must equate least effort with least cost. A simple copy and paste job from an external source suited to the known tastes of a reasonably well-understood readership. Tits and bums, celebrities and sport, gossip and prejudice. Naturally the prejudice can be high-minded if that is what the market demands.
Source:
http://akhaart.blogspot.com/2017/03/mainstream-media-explained.html