Facebook and Twitter could change their distribution strategies to better reward news that is accurate, as one way of dealing with fake news, the top executive of Quora said on Tuesday. Another possibility they face is more government scrutiny, he said at The Information’s subscriber summit on Tuesday.

Adam D’Angelo, a former Facebook executive who now runs the question-and-answer site, said media companies have more incentive to produce stories that are “shocking” and will get broad distribution on Facebook and Twitter than to invest in teams of fact checkers. He called on Facebook and Twitter to “reward” news companies producing high-quality content with wider distribution. Adam Mosseri, Facebook’s vice president of news feed, said in an earlier interview at the summit that the company was taking steps to tackle the issue.