 Which of these is the most valid critique of the Shanghai study?
Some blamed the BBC, some blamed those in Savile's immediate circle, but others blamed a simple error of human judgment. "He literally couldn't look more like a paedophile," read one post – one of many to state a supposedly incontrovertible truth: that Savile's criminal tendencies could have been detected from the shape of his features, his eyes, his hair. A recent paper, published by Xiaolin Wu and Xi Zhang of Shanghai's Jiao Tong University, claims to be the first to use machine learning and neural networks to attempt a fully automated inference of criminality from facial images, removing prejudice from the equation and testing the validity of our gut feelings. Through a study of 1,856 images ("controlled for race, gender, age and facial expression") they claim to have established the validity of "automated, face-induced inference on criminality, despite the historical controversy surrounding this line of enquiry." In other words, they believe that they've found a relationship between looking like a criminal and actually being one. All of Greek society, it was claimed, could benefit from this skill: it could assist with choosing an employee, a slave or a spouse, while its inherent vagueness made it intriguing to philosophers and useful for scientists who bent the theories to support their own beliefs. It became a recognised science in the Islamic world, and was used and taught in Europe throughout late antiquity and the early Middle Ages, despite nagging doubts among thinkers and physicians of the day. Theories of physiognomy, however, would persist beyond the Renaissance.
 Very different conclusions can be drawn from different images of the same person
 This type of task is good at identifying petty criminals but not more dangerous ones like murderers  If you only study men in these examples we cannot know how to locate females who may be a danger to those around them  They did not study enough types of facial expressions  Very different conclusions can be drawn from different images of the same person