The Facebook CEO's at-times awkwardness saw him being compared to Star Trek's Data - an android who struggles with human behaviour and emotions.
"Every time, there is a control right there - not buried in settings somewhere, but right there, when they're posting about who they want to share it with", he added.
Zuckerberg said he did not know if there were conversations within Facebook about this, and, when pressed about the decision not to inform users' their data was breached, Zuckerberg said: "in retrospect, we clearly view as a mistake". Facebook's technology doesn't need Zuck to post "I'm in Washington D.C." to know that he's in Washington, D.C. Similarly, Facebook doesn't need you to say "I've got a crush on so-and-so".
He parried questions of how much control people have over their data on the world's largest social media network without a major gaffe, while avoiding being cornered into supporting new government regulation.
Facebook also includes a note about its data collection in its user agreement, noting that it collects data on "the websites and apps you visit, your use of our services on those websites and apps, as well as information the developer or publisher of the app or website provides to you or us".
The 33-year-old billionaire has apologised numerous times and promised to make meaningful reforms to protect data privacy. Using geolocation or an IP address, all you'd need to do is open Facebook's mobile app on your phone.
"Acknowledging responsibility for the content shared on the platform changes how Facebook ought to engage in gatekeeping and fact-checking, and how the government might go about regulating the industry".
Over the past several weeks we've seen quite a bit of backlash over Facebook's latest series of privacy blunders. He asked Zuckerberg if content on Facebook is filtered, and who determines what is appropriate and inappropriate for the site.
"We are two women of color, how are we unsafe?"
"Nothing is unsafe about that", Zuckerberg replied, explaining that these were mistakes.
"I think we may be updating it a little bit".
This has a lot of people frustrated with Facebook. "Some things are striking during this conversation", she said. Because that's it, chances are Facebook has more they're not sharing. "I would appreciate if you do that" said Rep. Duncan.
Zuckerberg said he and his teams were working on it. and that was about it. All this information then is mixed using some secret and powerful algorithms that create your Facebook profile.
The company has always denied these allegations. And many of them were curious as to how quickly Facebook would be able to complete the crucial work of understanding the extent of its personal-data liabilities.
And because Facebook claims it's for security, there's no way to turn it off.
"If you think it is hard to pass a bill that affects a lobbyist's favorite client", said Alvaro Bedoya, a former congressional aide who worked on privacy issues for former Senator Al Franken, "try passing a bill that affects all of them".
The issue of Facebook and people leaving of course they can't, there were the same problems with the financial crisis of 2008.
Near the end of the session, Debbie Dingell, a Democrat from MI criticised Zuckerberg's lack of knowledge of his own company.