and the big tech companies in the valley today and now as promised we re joined by david corn and emily dreyfus, a senior fellow on technology and social change at harvard centerco author of meme wars the untold story of the online battles up ending democracy in america and an expert on modern media manipulation tactics. welcome to both of you. i just walked to some of what obama said in the issues. your thoughts on what is doable, fixable here. you know, i was really heartened by obama s speech today. it really showed that he has a good grasp of this issue. disinformation is something we ve been studying for a very long time. it goes way beyond the simplification of just misinformation. it is a huge entrenched infrastructure-based problem and i think obama showed a very nuanced understanding of it. so that was a good thing. i think one of the most doable changes that he mentioned is the need for transparency from the