ZURICH, SWITZERLAND—The Wikipedia entry on Dada—the World War I–era "anti-art" movement characterized by random nonsense words, bizarre photocollage, and the repurposing of pre-existing material to strange and disturbing effect—may or may not have been severely vandalized, sources said Monday.

"This is either totally messed up or completely accurate," said Reed College art history major Ted Brendon. "There's a mustache drawn on the photo of Marcel Duchamp, the font size keeps changing, and halfway through, the type starts going in a circle. Also, the majority of the actual entry is made up of Krazy Kat cartoons with abstract poetry written in the dialogue balloons."

The fact that the web page continually reverts to a "normal" state, observers say, is either evidence that ongoing vandalization is being deleted through vigilant updating, or a deliberate statement on the impermanence of superficial petit-bourgeois culture in the age of modernity.