Can Twitter change its ‘core’ and remain Twitter?

NEW YORK—After long resisting change, Twitter CEO Jack Dorsey wants to revamp the "core" of the service to fight rampant abuse and misinformation. But it's not clear if changing that essence—how it rewards interactions and values popularity—would even work.

Though Dorsey was scant on details, what is certain is that the move will require huge investments for a company that doesn't have the same resources that Google and Facebook have to throw at the problem. Any change is likely to affect how users engage with Twitter and hurt revenue, testing the patience of both users and investors.

"Social networks have a history of ... well-intentioned but badly designed efforts to fix this," said Nate Elliott, principal at marketing research firm Nineteen Insights.

Twitter isn't alone in having to deal with hate, abuse, misinformation and bad actors using the service for elections interference, targeted harassment and scams. And Twitter isn't alone in proposing fixes that don't get to the heart of the problems.

Case in point: Facebook. After Russian trolls were found to have used Facebook to interfere with the 2016 U.S. elections, including by purchasing ads, the company spent a lot of time and energy building a tool that shows who's behind political advertisements. But Elliott said it's not even clear which ads on Facebook are the ones causing problems around foreign elections meddling. In 2016, Russian agents weren't so much running political ads for or against candidates but rather social ads on divisive such as gun control and immigration.

But like Facebook, Twitter has to try—or at least be seen as trying.

Dorsey told The Washington Post that Twitter had not considered changing the core of the service until now. Like Facebook and others, Twitter has been accused of tinkering around the edges, tweaking policies and hiring masses of moderators when what's really needed is a fundamental shift in how they work and how they make money in order to survive. While many former executives and other insiders have proposed radical shifts at major social networks, it's rare for a sitting CEO to propose something as drastic as revisiting the foundation that his company is built on.