"Doctored image depicting a giant robot assisting socialist revolutionaries in 1917 was accidentally used in a history exam. It is the second year in a row the Victorian Curriculum and Assessment Authority has been forced to apologise following debacles in the end-of-year exams. Purnell said while some students didn't notice the robot, others wasted time trying to work it out: ''One student suggested it was a statue of Alexander Kerensky, head of the Mensheviks. Another student thought it was the battleship Aurora - it's clear several students were thrown by it.''" cf. CogSci experiment where gorilla image implanted in x-rays was not noticed by expert radiologists :-) - Adriano