The social code remains unwritten, and it has always interested me how many problems this poses in the matter of ascertaining the truth. The truth often appears in the guise of a threat to the social code. It has this in common with rudeness. When people tell the truth, they can experience a feeling of release from pretense that is perhaps similar to the release of rudeness. It might follow that people can mistake truth for rudeness, and rudeness for truth. It may only be by examining the aftermath of each that it becomes possible to prove which was which.
Rachel Cusk, “The Age of Rudeness”, The New York Times Magazine (19 February 2017), 40.