Judge denies Meta and Google a new trial on the first social media addiction verdict

According to courtdocket.org, the verdict is expected to bear on roughly 2,000 similar cases that have been consolidated in California state courts, along with thousands more in multidistrict litigation in federal court ^[3]. How far it reaches depends on what carries over from one plaintiff to the next. Kaley started on YouTube at age 6 and Instagram at 9 ^[4]. She said constant use exacerbated mental health struggles she already had ^[5]. Meta contended that other factors, including her home environment, drove her difficulties ^[10]. Every other plaintiff arrives with a separate history, and Meta built part of its defense on exactly that.

The design theory is the part we think travels furthest. Under Section 230 of the Communications Decency Act, internet companies are generally protected from liability for content their users post, and the plaintiffs' team, led by Mark Lanier and Matthew Bergman, tried to move the case outside that shield by focusing on product design ^[8]. The features they pointed to, including autoplay and push notifications, belong to the product ^[7]. The trial heard from platform engineers as well as clinicians and executives ^[11]. In our view, engineering evidence about a feature can be reused from plaintiff to plaintiff, while proof that the feature harmed a particular person has to be rebuilt each time. We do not know yet how other judges will treat the theory.

The defendants' strongest point goes to causation. Their position was that "social media addiction" is not a recognized clinical diagnosis and that there is no scientific proof social media causes clinical addiction ^[9]. Dr. Anna Lembke of Stanford testified for the plaintiff that Instagram and YouTube are "inherently addictive" ^[12]. Instagram head Adam Mosseri testified on February 11, 2026 and rejected the addiction framing ^[14]. He said, "We are trying to be as safe as possible but also censor as little as possible" ^[13]. After a six-week trial the jury found for the plaintiff ^[11][1], and, according to the courtdocket.org headline, the defendants were then denied a new trial ^[15].

Snap and TikTok settled confidentially in January 2026, so the jury's $6 million is the only dollar figure in this record ^[6][1]. We would expect both sides to quote it. For Meta and YouTube, the choice this quarter is whether to try the next case or settle it, and next quarter's consequence is that either path adds to the record the other plaintiffs will cite. The extract does not include the date or reasoning of the new-trial ruling, any decision to appeal, or the date of the next jury trial. Until those exist, we would treat $6 million as the value of one plaintiff's case.