LOS ANGELES, Feb 19, (AP): Mark Zuckerberg and opposing lawyers dueled in a Los Angeles courtroom on Wednesday, where the Meta CEO answered questions about young people’s use of Instagram, his congressional testimony and internal advice he’s received about being "authentic” and not "robotic.” Zuckerberg's testimony is part of an unprecedented social media trial that questions whether Meta's platforms deliberately addict and harm children.

During questioning by the plaintiff's lawyer, Zuckerberg said he still agrees with a previous statement he made that the existing body of scientific work has not proved that social media causes mental health harms. The plaintiff’s attorney, Mark Lanier, asked Zuckerberg if people tend to use something more if it’s addictive. "I’m not sure what to say to that,” Zuckerberg said. "I don’t think that applies here.”

Attorneys representing the plaintiff, a now 20-year-old woman identified by the initials KGM, claim her early use of social media addicted her to the technology and exacerbated depression and suicidal thoughts. Meta Platforms and Google’s YouTube are the two remaining defendants in the case, which TikTok and Snap have settled.

Beginning his questioning, Lanier laid out three options of what people can do regarding vulnerable people: help them, ignore them, or "prey upon them and use them for our own ends.” Zuckerberg said he agrees the last option is not what a reasonable company should do, saying, "I think a reasonable company should try to help the people that use its services.”

Lanier questioned the Meta CEO extensively about a comment he made during a past congressional hearing, where he said Instagram employees are not given goals to increase amount of time people spent on the platform. Lanier presented internal documents that seemed to contradict that statement. Zuckerberg replied that they previously had goals associated with time, but said he and the company made the conscious decision to move away from those goals, focusing instead on utility.

He said he believes in the "basic assumption” that "if something is valuable, people will use it more because it’s useful to them.” Lanier also asked Zuckerberg about what he characterized as extensive media training, including for testimonies like the one he was giving in court. Lanier pointed to an internal document about feedback on Zuckerberg's tone of voice on his own social media, imploring him to come off as "authentic, direct, human, insightful and real,” and instructing him to not "try hard,” or be "fake, robotic, corporate or cheesy” in his communication.