theory: seeing as these are pictures that were very specifically "taken" in a given context - with a camera, by someone, for something (dating, facebook, etc.),

theory: seeing as these are pictures that were very specifically "taken" in a given context - with a camera, by someone, for something (dating, facebook, etc.), would it be possible that the algorithm is picking up differences more in how people relate to those conditions, vs facial morphology? For example in the example photo, i would have also guessed that the model was a liberal. But I think it was more about the something in the WAY she was smiling and posing for the camera, and i guess also her specific grooming - hair and makeup.