Hard Fork

Jonathan Haidt Strikes Again + What You Vibecoded + An Update on the Forkiverse

with Jonathan Haidt
16 Jan 2026 12 min read 1h 18m
TL;DR

Haidt presents new research showing overwhelming evidence that social media *causes* mental harm to children through multiple mechanisms—sexual harassment, sextortion, bullying, and exposure to porn—not just correlation. He argues the key isn't debating whether social media caused the historical mental health crisis, but whether these platforms are safe consumer products for kids right now, and the evidence says definitively no.

Key Moments
Jonathan Haidt
“There are tons and tons of evidence of causation and meta did some of the best studies to show it. There's so many different kinds of evidence including what the kids themselves say, what the parents say, what the teachers say, like everybody sees it. That's evidence. And then there are experiments that with random assignment that show that when you get off social media for at least a week, depression gets less.”
Haidt explaining how he moved beyond the correlation-vs-causation debate by cataloging multiple lines of evidence from Meta's own internal research
▶ 4:10
Jonathan Haidt
“Um you know kids if you're on social media you can get sexed. if you're not, you can't really. Um, and the kids who get sexed are deeply shamed. You know, they shared a picture of themselves, these boy, teenage boys usually. Um, and then their lives are ruined and some of them commit suicide.”
Describing sextortion as the most stark mechanism of harm he found in Meta's internal research
▶ 5:51
Jonathan Haidt
“If one person does something really bad, that might be a bad person. if everybody in a situation is doing something bad. That's guaranteed to be a bad situation. So, no, I don't blame. I mean, look, of course, parents should stand up and parent. But look, so many of us are trying and it's really, really hard.”
Responding to the question of whether parents and schools share blame for allowing kids on social media
▶ 11:17
Jonathan Haidt
“Well, I'm 62. Uh God knows how many years I have left with a brain that's still functioning. You know, I can't count on more than 10. Um and so how am I going to spend those those remaining good years? Uh I could write another book on democracy, which will be out of date by the time it comes out because my god, things are changing fast. Or I could devote myself to to pushing for phone free schools and raising the age.”
Explaining why he pivoted from academic research to full-time advocacy after The Anxious Generation's success
▶ 13:15
Jonathan Haidt
“If we can't win on social media, if we can't get consensus that this is bad and that government should do something, if we can't win on that, then I just just give up on AI. Just say it's game over. Our kids are gone.”
Addressing Kevin's concern that Haidt may be fighting the wrong war as AI companions emerge as a new threat
▶ 25:42
About Jonathan Haidt
›
Jonathan Haidt is a social psychologist and bestselling author of *The Anxious Generation*, which spent 88 weeks on the New York Times bestseller list. He has become a leading advocate for phone-free schools, raising the age for social media access to 16, and delaying smartphones until high school. His latest research directly addresses causation between social media and mental health harms in young people.
Takeaways
1
Meta's own research proves causation exists Haidt's new "Mountains of Evidence" paper catalogs multiple types of evidence from Meta's internal research showing social media directly causes harm—not just correlation. This includes controlled experiments where kids who quit for a week show reduced depression, plus qualitative reports from kids, parents, and teachers. This directly counters Meta's decades-long defense that the science is ambiguous.
2
Product safety framing is more powerful than history Rather than argue whether social media caused the 2012+ mental health crisis (historically hard to prove), Haidt separated that into two questions. The more winnable question is simpler: "Are these apps safe for kids now?" Seven different lines of evidence say no. This reframing has proven effective with lawmakers and explains why Australia's age restriction passed.
3
The harms are environmental, not single-issue It's not just negative social comparison (the old theory). Haidt found Instagram, TikTok, and similar platforms expose kids to sexual harassment (15% weekly), sextortion, bullying, porn, and gambling—a toxic stew of hooks. Boys face porn, betting, and gamified crypto; girls face appearance-based comparison. This environmental toxicity means almost all heavy users experience *some* harm across multiple vectors.