Weren't we warned never to judge a book by its cover? Foster cites Canadian uber-designer Bruce Mau, whose two huge doorstop books, S, M, L, XL (in collaboration with architect Rem Koolhaas) and Life Style, aren't so much to be read, or even placed on the coffee table - they are the coffee table. And look at the irony of that first title - it's culture, any size you want it.