One of the most extraordinary sights at the Edinburgh Fringe this year is the Mirazozo, a giant inflatable that is illuminated by natural light.
Every morning the mass of silver plastic is blown-up and transformed into a huge shining structure of domes and tunnels.
It is designed to enhance and alter the audience's visual perceptions.
But only to a certain extent. The uterinally-enabled and innocent children may have their visual perceptions challenged, but most screaming heterosexual men will just say:" Look at the giant tits!"