Bestsellers are such because they use pastime language and allow readers to project all the bad feelings on the book.
The unicist standard for future research allows making inferences from particular facts to universal conclusions based on the homology of their fundamentals.
The nature of bestsellers is that they respond to the needs of a culture including those who appear to have anti-establishment views. Anti-establishment bestsellers in fact just expose the implicit weaknesses of the strengths of a society.
Cultures that naturally follow bestsellers are comfortable in their conservatism. That is why bestsellers are attacked by anti-establishment intellectuals.
The influence of bestsellers is a hard indicator of the level of conservatism of a culture when developing country scenarios. The need to project the bad feelings and introject the good is the natural need of a conservative person.
NOTE: The Unicist Research Institute was the pioneer in using the unicist logical approach in complexity science research and became a private global decentralized leading research organization in the field of human adaptive systems. It has an academic arm and a business arm.