It was an unusual expedition because the next day I took a short trip in this balloon. The shot is taken from the top of the Mole Antonelliana which houses the film museum in Turin, and I thought I was lucky to see a balloon. But it transpires that this is a permanent Turin fixture and if you look closely, you'll see the balloon is tethered. Passengers are loaded and then it slowly rises, attached to its line, for about twenty minutes. Part of the basket's floor is transparent - so if you're nervous of heights it might not be for you. But if there's an opportunity, I feel compelled to go up on high things and look around. A balloon is a sphere and has a special place in symbolism - because it is the "cube of the circle" and adds another dimension to it. Domes in temples are hemispheres and express a wholeness that is the combination of the circle and the square. If perfection must be pictured, it would have to be in the shape of a sphere. But something else appeared in the photo and I hadn't realised it was there until today. A helicopter is making it's way to a landing pad at the Centre for Orthopedic Trauma, a Turin hospital that I know extremely well. It was a day of photographic coincidence - or perhaps as Jung believed, there really is no such thing.