I don't know a single collector or museum director who says: 'Oh, he's on a list, so I think I'll buy something of his.' The people who buy my art put a little more thought into it than that.

It would be wrong to say that the city of Berlin is not regulated. What I think is more interesting is to what extent a city creates a sort of safe haven for its users, so that people feel confident that the city works on their behalf.

I was in Beijing a month ago working on the smoke project in collaboration with an architect there, and I was asked very directly whether it was safe to breathe in the smoke. They did not have confidence in the museum not to use harmful smoke, and they certainly didn't have confidence that the city would protect them from harmful smoke.

In the past Berlin was much more radical and extreme and now it's becoming much more of a conventional European city.

Oh, you know, I think it was definitely a little pressure, to remake something like 'Fame'.

I go into a young film director's office these days and he says, 'Hey man, I know who you are. I grew up watching 'McHale's Navy'. And I think, 'Oh boy, here we go again'.