What do you get if you cross a polling firm with two art critics? Art that Americans want but art lovers hate. I am grateful to have been recommended Komar and Melamid’s book – proof that a scientific approach to art results in banality rather than a masterpiece. Edgy to me means the opposite of average. It means being prepared to take a risk. I remember Steve Harrison, at Ogilvy & Mather Direct in London in the early 1990s, writing a brilliant brochure on it. My client at SC Johnson, Salman Amin, once showed me a book he keeps in his office to remind him of the danger of “average”. It is Painting By Numbers, Komar and Melamid’s Scientific Guide to Art.