service. not just to build trust. although i think providing people with control also does that but actually in order to make it so that people can fulfill their goals of the service. senator coons. thank you. thank you senator grassley and thank you mr. zuckerberg for joining us today. i think the whole reason we are having this hearing is because of a tension of two basic principles have you laid out. first you said about the data users post on facebook you control and own the data you put on facebook. you said some positive optimistic things about data ownership. it s also the reality that facebook is a for profit entity that generated $40 billion in ad revenue last year by targeting ads. in fact, facebook claims that advertising makes it easy to find the right people, capture their attention, and get results, and you recognize that an ad-supported service is as you said today best aligned with your mission and values. but the reality is there is a lot of examples where ad targe