What year was the essay, which preceeded the book written by Harry G. Frankfurt, released?
On Truth: On Truth is the book 2006 follow-up to Harry Frankfurt's 1986 essay, "On Bullshit". On Bullshit: "On Bullshit" (2005), by philosopher Harry G. Frankfurt, is an essay that presents a theory of bullshit that defines the concept and analyzes the applications of bullshit in the contexts of communication.
1986