 Historical figures have proposed all of the following theories regarding physiognomy EXCEPT for the idea that:
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." Physiognomy, the 'science' of judging people by their appearance, was first theorised by the ancient Greeks in around the 5th century BC. Aristotle's pronouncement that "it is possible to infer character from features" led to a number of works relating to 'Physiognomica', a word derived from physis (nature), nomos (law) and (or) gnomon (judge or interpreter). 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. Theories of physiognomy, however, would persist beyond the Renaissance. In 1586, Italian scholar Giambattista della Porta published a book, De humana physiognomonia libri IIII, which established him as the 'father of Physiognomy'. In the 17th century, Swiss poet Johann Caspar Lavater took della Porta's methodology and ran with it, commissioning artists to illustrate his popular Essays On Physiognomy – which, to the chagrin of his contemporary, the writer Hannah More, sold for "fifteen guineas a set… while in vain we boast that philosophy [has] broken down all the strongholds of prejudice, ignorance, and superstition."
 humans will never be able to eliminate the effects of physiognomy from their decision-making
 humans share similar characteristics to animals based on their facial features and mannerisms  humans can use physiognomy to select which employees, slaves, and mates may be most compatible with them  humans are constantly influenced by physiognomy on a daily basis  humans will never be able to eliminate the effects of physiognomy from their decision-making