when they weren't funny any more, they were made to feel it. Have any of your other works brought people together this way? In Horizon Field Hamburg , we create a space for 100 people on an unstable, reflective black platform hanging 7.5 m off the ground from eight 22-millimetre cables. It is a very destabilising and disorientating experience, but it's important that it is so. How does the platform affect people? Some people seem to be highly physical, doing cartwheels and yoga and Pilates and a whole load of other things - trying, for instance, to stand when the whole platform is oscillating, and even managing to do so - while others lie and watch or simply meditate on the experience of being in, but not of, the world. The platform creates the experience of the space at large - space as an expanding condition - and the social nature of space. They can look out of the windows at a distant horizon where the cityscape and the sky interact. They can also sense the collective movement, because every footfall, every movement of everybody on that platform is transmitted through this thin, tensile surface. Why destabilise people? I use shock tactics, but only to the extent of putting somebody in a position of reflexivity to create a point at which value might arise. I don't want to illustrate things that are already known. So a lot of the time, I'm trying to engineer experiences. And they are often experiences