Mark Zuckerberg : Senator, people have a control over how their information is used in ads in the product today. So if you want to have an experience where your ads aren't targeted using all the information that we have available, you can turn off third party information. What we've found is that even though some people don't like ads, people really don't like ads that aren't relevant. And while there is some discomfort, for sure, with using information in making ads more relevant, the overwhelming feedback that we get from our community is that people would rather have us show relevant content there than not. So we offer this control that you're referencing. Some people use it. It's not the majority of people on Facebook. And I think that that's that's a good level of control to offer. I think what Cheryl was saying was that in order to not run ads at all, we would still need some sort of business model.