The polar bear video has millions of views. Set to a haunting piano score that’s become ubiquitous on TikTok, it shows a lone bear swimming between increasingly distant ice floes. The comments section overflows with teenage grief, rage, and helplessness.
Beside my laptop screen lies the latest Intergovernmental Panel on Climate Change (IPCC) report. Same subject, different universe. The measured language of climate science stands in stark contrast to the raw emotions evoked by that TikTok. Both contain some truth, but also fundamentally different frequencies of human understanding.
Gen Z, the first generation to spend their earliest years in the smartphone era, has developed a fundamentally different relationship with truth.
Starting in 2010, researchers across multiple countries began documenting a sharp rise in adolescent anxiety, depression, loneliness, self-harm, and social withdrawal. Large-scale survey data from the United States, the United Kingdom, Canada, Australia, and Europe showed similar trend lines emerging between 2012 and 2014. The timing aligned almost exactly with the moment smartphones, front-facing cameras, and algorithmically driven content platforms became the dominant hubs of adolescent social life.
Studies using data from the Centers for Disease Control and Prevention’s long-running Youth Risk Behavior Survey, the University of Michigan’s Monitoring the Future study, and parallel international mental health datasets found steep increases among teenage girls in depressive symptoms, sleep disruption, and feelings of persistent sadness and hopelessness. Researchers also documented declines in face-to-face social interaction alongside dramatic increases in time spent interacting online.
But the deeper transformation was not simply psychological. It was cultural and cognitive. As social life migrated onto platforms optimized for engagement, visibility, and emotional reaction, questions of truth increasingly became filtered through identity, emotion, and social validation rather than through slower institutional systems of evidence, authority, and debate. Beyond changing what young people consumed, social media also altered how they processed reality. That shift, from shared public truth toward personalized and algorithmically reinforced truth, sits at the center of truth’s future.
“Our realities,” says Emma Lembke, “are being shaped by a profit-driven attention economy that prioritizes engagement over well-being.” Lembke is the director of Gen Z Advocacy at the Sustainable Media Center, a nonprofit I direct that brings together an intergenerational board to protect kids from the harms of social media. She has spent years organizing young people around these issues, tracking platform behavior, and building coalitions between researchers, attorneys, and youth advocates. For her, this isn’t an abstract threat. It’s her generation’s everyday life.
The danger is no longer just misinformation. Thanks to AI, it’s now possible to manufacture fake realities at scale. Deepfake videos, cloned voices, and bogus news stories are dissolving the line between what’s real and what’s not faster than society can adapt.
Fully AI-generated personas, with faces, voices, backstories, and millions of followers are already operating across Instagram and TikTok, indistinguishable from human influencers. Gen Z didn’t create this problem. They inherited it. And they’re navigating it without a map, inside feeds that have no obligation to tell them what’s real. For Gen Z, whose understanding of the world is already filtered through algorithmic feeds, reality itself often arrives pre-curated, emotionally optimized, and computationally amplified.
New York University professor and media critic Scott Galloway has been blunt about the way AI and algorithmic platforms are reshaping truth for Gen Z. He argues that AI-powered platforms like Facebook and TikTok aren’t just social networks. They have become influence engines capable of shaping what millions of young people see, believe, fear, and ultimately accept as real.
Central to Galloway’s critique is the idea that engagement has replaced human judgment as the organizing principle of information online. Platforms are optimized not for accuracy, empathy, or discussion but for attention and emotional reaction. “They aren’t crawling the real world; they aren’t crawling what’s best about us,” he said during a panel with Lembke at the Sustainable Media Center. “They’re crawling the comments section.”
That tension between emotional experience and factual truth is particularly visible around climate change. Climate activist Xiye Bastida, one of the most visible Gen Z voices in the global climate movement, has argued that social media allows younger users to experience climate change through human stories and firsthand accounts, creating an emotional understanding of the crisis that feels very different from reading scientific reports alone.