Faction was used when the subject material was based on real life events, however small fictions were added in and the line between what was fact and what was fiction would be so blurred to the extent where it would be almost impossible to define one from the other. This is similar to historiographical metafiction, where the difference between factual events and fiction would be obvious, for example in Thomas Pynchonâ€™s Mason and Dixon, when George Washington smokes cannabis. In terms of philosophy, postmodernist literature often contained endless deferral and a quest for self-understanding. However, due to the characteristic of endless deferral, this question could never be answered and so stories were often left with untied endings. Thomas Pynchon, one of the most famous postmodernist writers often used pastiche in his work, combining themes from other genres such as song, science fiction, crime-fiction and history. His works were also known to be quite dense and complex and he often, like many other postmodernist writers, wrote under the idea that society could never be truly understood, leading to a sense of paranoia in his works.