https://apnews.com/1d040084f3454fc5aa4c9831e43aaf3e > NEW YORK (AP) — 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.