New York (CNN Business) Elon Musk has landed in court several times for his tweets. Unsurprisingly, he has some thoughts about Twitter.

Twitter TWTR CEO Jack Dorsey casually called Musk at an employee conference Thursday and asked his fellow tech titan for any feedback.

a "troll army." "If you were running Twitter, what would you do?" Dorsey asked. Musk, who has 30 million Twitter followers , said it "would be helpful to differentiate" between real users and bots or"troll army."

"How do you tell if the feedback is real or someone trying to manipulate the system," Musk added. "So, some way to try to differentiate a real person or someone just trying to game the system."

Twitter declined to comment. But Yoel Roth, Twitter's head of site integrity, thanked Musk for his feedback and pointed him toward Twitter's policies.