scientific than sixand more million people, in fact, took around threewe got million profiles, facebook .rofiles at the beginning, in fact -- you know, people like to say, oh, graduated from high school, i already planned, you this research 20 years later. no, it wasn't the case. case, i kind of stumbled , kind of got into this research by accident. what happened is i was traditional personality questionnaires. and traditional personality questionnaires are composed of questions such as: i'm always on poetry orrk or i like i don't care about abstract ideas. and i had this dataset of facebook likes where basically or they like -- i don't like at ideas or i don't like to read. what struck me is that why would we even ask people this go toon if we can just their facebook profile, look at their facebook likes, and just, you know, fill in the them?onnaire for [laughter] started running those machine-learning -- simple machine-learning models that take your facebook likes and try to predict what would be your personality score. worked pretty well, which actually was pretty because iing for me spent so