proprietary algorithm, they don't seem to think they have to share that. how do you make them share that? >> there's a number of ways. you can require algorithmic audits to do what they claim they do, interest greater transparency for algorithms, an agency responsible for looking at their practices, either its impact on competition or on fairness to the consumers are two obvious places. that's only part of the solution. the problem is, because their business model allows them to collect data and then use that data to construct advertising and take the same information and use it as a basis to connect people whatever the content, toxic or dangerous or untrue, and so part of this is, again, gets back to the fact they're too big. they're too big to care, they have no competition, they have no rules, and congress has a role to play, so do our agencies and the ftc and the department of justice.