Artists, he says, rely on our proneness to visual illusions arising out of the fact that all perception involves unconscious inference, as when a two-dimensional retinal image is translated into a three-dimensional perception.

WSJ: Book Review: The Age of Insight

The company is renowned for its spectacular, 360-degree performances that take place above, aside and among the audience with acrobatic dance numbers, visual illusions, elaborate lighting and a live DJ mixing electronic, pop, percussion and tribal beats.

BBC: A spectacular homecoming for Argentine theatre

People are generally unfamiliar with the visual language thus perhaps this is why so-called optical illusions exist?

FORBES: A Flabbergasting Video Optical Illusion