I was in the Square at the time. The crowd was a most good-humoured, easy going, smiling crowd; but presently it was transformed. A regiment of mounted police came cantering up.
I don't start with a design objective, I start with a communication objective. I feel my project is successful if it communicates what it is supposed to communicate.
I actually washed my window once, and it fell through - it was being held together by the dirt.