After about a month of hearing from addiction experts, therapists, platform engineers and executives, including Mark Zuckerberg, a jury is listening to closing arguments before heading to the deliberation room to decide whether social media companies should be liable for harms caused to children using their platforms. Closing statements in the trial began Thursday at the Spring Street Courthouse in Los Angeles. Lawyers representing the plaintiff, a 20-year-old woman, and those representing the two defendants, Meta and Google-owned YouTube, will make their respective cases to the jurors.

A 20-year-old woman is seeking to hold social media companies responsible for harms to children who use their platforms. She began using the platforms as a young child and claims her early use of social media addicted her to the technology and exacerbated depression and suicidal thoughts. Meta and YouTube are the two remaining defendants in the case, which TikTok and Snap settled. The woman, who has been identified by her first name, Kaley, and initials, KGM, has testified before a jury in the unprecedented case, saying she was on social media “all day long” as a child.