Detecting academics' major from facial images

A few months ago I read a paper with the title "Deep Neural Networks Are More Accurate Than Humans at Detecting Sexual Orientation From Facial Images", which caused a lot of controversy. While I don't want to comment on the methodology and quality of the paper (that was already done, e.g. in an article by Jeremy Howard), I found it very interesting and inspiring. In a nutshell, the researchers collected face pictures from dating websites and built a machine learning model to classify people's sexual orientation and reached quite an impressive accuracy with their approach. AI Can't Tell if You're Gay… But it Can Tell if You're a Walking Stereotype. And indeed, we often see people who look very stereotypical.