(Photograph) - Still life: Shoppers in London's Charing Cross Road were bewildered as artists Trish Lyons and Carmel Cannon asked them to lend a hand in the creation of a drawing in the display window of Central St Martin's College of Art and Design. The lifelines of passers-by were traced and transferred to create a cumulative pattern. The end product left only one question. Was art imitating life, or vice versa?