I think time is a constraint to destroy and then reinvent. If you give me a constraint, I'll accept it. But I always try to move it around, or to readapt it. Ecco! If you lock me in a room, well I'll go out through the window! I always remember Achille Castiglioni, one of my mentors, and he always said that in industrial design you have the idea, the fantasy, the concepts - that's the marmalade! - but the constraint of the brief is the bread. You need both in order to find structure for your ideas.