dr. michal introduce us to his work. particularly, facebook likes and profile pictures. they will help us to begin to grasp how sussman's are being and could be used to shape our political and social reality. join me in welcoming michal kosinski to the stage. [applause] >> hi, david. good evening, everyone. david: thanks for helping us pure behind this curtain. maybe we can begin by having you describe your work for us. what do you believe can be learned from our facebook likes and profile pictures. again for having me here. i am a competition scientist. i am working mostly with data, in particular big data. withad of spending time research subjects in my lap or running small experiments or maybe learning about people using surveys, i would look at the digital footprints that you so nicely introduced before that we are all leaving behind while using digital products and services. a is a great time to be computational scientist, a great time to be made. at the moment, because -- we all enormous amount of digital footprints. we are an estimated megabytes per day per person