teenager having a bad experience on instagram is too many, and i can tell you that the hundreds of people at facebook who actually do work on child safety, this former employee does not, did not. but those who work on child safety and work with dozens of external academics and child safety experts, this is our top priority. and are not only are we doing this research and asking the hard questions, we are also using that research to inform the way we build our products. >> have you found reside that girls say it increases suicidal tendencies, any research, have you seen that? >> if i can finish, some of the tools we built. we connect them, if somebody's searching for eating disorder related terms, we connect them with wellness resources. we give them tools to prevent bullying and harassment. that's the result of us asking these hard questions and doing this research, and we're going to continue to do it. >> let me tell you what frances