“Picture this. Visitors to the Vatican arrive in St Peter’s Square … After looking at a display on Michelangelo’s Sistine Chapel frescoes, they are filtered into a full-scale replica, with a ceiling that is a giant photograph of the famous artwork. Perhaps one day this may come about, as the Vatican worries about preserving its artistic treasures. But I suspect no one would be very happy to visit a substitute Sistine Chapel. What would be the point? … Why then is it considered perfectly reasonable to offer fake ice age art as a cultural attraction?”