Bruce Nauman is among the most renowned American artists working today. Across a career that began in the 1960s, he has used many different media to play with the artist’s traditional role as a visual communicator – someone who tells stories with symbols. Here he flips the word ‘war’ into ‘raw’, but to ambiguous effect. Is Nauman using language to make an anti-war statement, or rather commenting on the instability of language itself? (Brought to light, November 2009)