I wish I could email Banksy to congratulate him on his work. Even more, I wish I could have him create one of his works of art on the plain white garage door of my home. Alas, if I put my address in all sorts of nutters would turn up to vandalise my home. Hopefully one day we will know who he - or she- is and they will not face prosecution. Yes, there is a difference between what Banksy does and what vandals do.