What is "symbiopsychotaxiplasm"

Symbiopsychotaxiplasm: Take One is a 1968 experimental documentary film written, directed, and conceived by African-American film director and documentarian William Greaves. The film, which is shot and presented in the style of a cinéma vérité documentary, attempts to capture and examine pure reality unhindered by the presence of the cameras all around. It is perhaps most memorable for the layers of metatextual storytelling inherent in the concept of the story: that of a documentary inside a documentary inside a documentary.

In 2015, the United States Library of Congress selected the film for preservation in the National Film Registry, finding it "culturally, historically, or aesthetically significant".