"Hello" is always presented as a linear narrative, a singular chain, sometimes in a loop. But the reality of making it is that connections are naturally sprawling all over the place, so I am free to edit any way I want.

National parks, zoos, protected areas, polluted seas - using the whole world as a readymade, I thought about it as a stage set. To activate a stage set you need a drama, an actor to offset it.

I've made a poster at home. You know the iconic image of Che Guevara, the black and red graphic of his face? I think it's the perfect graphic, the best graphic ever made. I cut a Concorde out and put it over his head so it's Che looking up and the Concorde going by. Both are dead, maybe obsolete.

I'm neither shy nor impressed by media and press. It's just another industry to me. My response to the criticism was, "I work with a steel factory. Why can't I work with the media?"

Really the moment I decided I wanted to do art seriously, I left art school. I wanted to be with people who were interested in the same things I was: popular culture.

The Stonehenge proposal got a lot of interesting criticism. One of the best - or worst - said something like, "Go home to Las Vegas." I think this project could possibly be realized at a very late part of my career. Right now, I don't have the authority, the budget, the credibility.

Dutch beaches were known to me as man-made territories, as part of various land reclamation projects. But I was also interested in the media reality of the Moon landing. I wanted to use that event as a measure of time, to see what had happened in those thirty years - which happens to be my lifetime as well. I was born in 1967 and I remember seeing the Moon landing on TV when I was two. All those things were in play. Then it became a big production. It took five months to gather up the goodwill and make it happen.