The general definition of a pop-culture nonfiction book is that it contains ideas, perspectives, attitudes, memes, images, style, and other parts of mainstream culture. Pop culture is heavily influenced by mass media and is global. We like pop culture from all eras and think it is an important reflection of society. It may not be history in a scientific and analytical sense but you can learn a lot about a society in the context of the times but what is trendy and what makes people happy. Fads are a form of pop culture. We also include humor in this category because often humor is a mirror of the pop culture of a particular time.