> Sophisticated methods and “big data” can in certain contexts improve predictions, but usually only slightly, and prediction remains very imprecise The worst

> Sophisticated methods and “big data” can in certain contexts improve predictions, but usually only slightly, and prediction remains very imprecise The worst part of big data is the data itself. Used to be common will be shared on Facebook webs about "what is your political compass". There results were used to create political profiles of users and targeted propaganda. You don't need ML to predict the data that there user already has given.