We Taught the World to Read. Then We Forgot Why It Mattered.
For most of human history, literacy was a privilege of the few. Then, slowly and then all at once, that changed. Over the course of the twentieth century, the ability to read spread across the globe like nothing civilization had ever seen, one of our most consistent and unambiguous upward trends. By the early 2000s, it had come to feel permanent. Progress, we assumed, only moved in one direction.
It does not.
Around 2012, something quietly began to reverse. Not the headline number, global literacy rates still technically inch upward, now hovering near 88 percent of adults. But literacy in the deeper sense, the ability to sit with a complex text, follow a sustained argument, read something difficult, and let it change you, began to erode. The 2022 PISA results made it undeniable: student reading performance fell by the equivalent of half a year of learning since 2018, a drop researchers called unprecedented in the survey's history. Even in wealthy, developed nations, the trend was the same. Something was going wrong with the human mind at scale.
What changed around 2012? You already know. It fits in your pocket.
The Indictment
I want to be direct about something that tends to get softened in polite discourse: the smartphone is not a neutral tool. It is, for most people who carry one, a device that is actively restructuring cognition, training the brain away from sustained attention, depth, and patience, and toward fragmentation, reaction, and the dopamine loop of the infinite scroll.
This is not metaphor. NYU social psychologist Jonathan Haidt, whose research has become impossible to ignore, calls the period between 2010 and 2015 "the Great Rewiring of Childhood." In his 2024 book The Anxious Generation, Haidt argues that a play-based childhood that had existed for millennia faded away and was replaced, very suddenly, by the phone-based childhood. The consequences were not subtle. Rates of depression and anxiety among U.S. college students spiked in the early 2010s and rose every year of that decade, up 134 percent and 106 percent respectively by 2020. The inflection point correlates with smartphone adoption crossing 50 percent of U.S. teenagers around 2012.
See The Anxious Generation and the Twenge and Haidt paper in American Psychologist.
It is worth noting that Haidt's conclusions are contested. Some researchers argue the causal links are overstated, and that correlation between screen time and mental illness does not settle the question of causation. Fair enough. But even his critics concede that something happened to young people around 2012. They disagree about what caused it. I do not find that very reassuring.
The Gender Rift
The damage is not evenly distributed, and that unevenness matters enormously. Internal research leaked from Instagram showed the platform makes body image issues worse for one in three teen girls. Haidt's data shows that girls are disproportionately harmed by social media, and that the correlation between heavy use and depression, anxiety, and self-harm is nearly double when you isolate female users from the combined dataset. The Wall Street Journal reporting on Instagram's internal research remains one of the clearest windows into that dynamic.
Meanwhile, boys are being pulled into something different: algorithmically curated pipelines of outrage, tribalism, and increasingly extreme political content. The result is a generation of young men and women who have come of age in entirely separate informational and emotional ecosystems. They are now entering their twenties as something closer to strangers than peers, shaped by different fears, different grievances, and different vocabularies for describing the world. Young people aged 15 to 24 now spend roughly 70 percent less time in face-to-face social interaction with friends than the same age group did a generation ago, according to the American Time Use Survey. We do not yet know what it means to build a society from people who grew up this divided. We may be finding out.
The Splinterization of Everything
The old monoculture had real problems. Three television networks, a handful of newspapers, a shared canon, these things carried their own distortions and exclusions. But they also gave us something we failed to appreciate until it was gone: a commons. Shared stories. A set of facts we argued about, rather than a set of facts we each invented separately.
The internet promised to liberate us from that narrowness, and in some ways it did. But the smartphone made the internet personal, relentless, and algorithmically optimized for engagement over truth. Now everyone lives inside a custom-built information environment, curated by machines whose only mandate is to keep you watching. We are not just reading less, we are reading entirely different things, in bubbles, at shallow depth. When there is no shared text and no shared story, everyone you encounter who read different things looks less like a neighbor and more like a threat.
Eli Pariser coined the term "filter bubble" in 2011 to describe exactly this dynamic. A 2023 study in Nature confirmed that social media algorithms amplify politically polarizing content across platforms, regardless of which party is in power or which country you live in. See The Filter Bubble and the Nature paper by Huszar et al.
The Archipelago
I keep thinking about Japan.
Japan is a nation of islands, geographically a scattered archipelago connected by water. It is now becoming something like that socially as well. By 2022, national estimates suggested that 1.46 million Japanese people, roughly 2 percent of the entire population, were hikikomori: so severely withdrawn from society they rarely or never left their homes. Japan appointed a Minister for Loneliness in 2021 and passed a formal law in April 2024 recognizing loneliness and isolation as national crises requiring government action. By 2050, nearly 44 percent of Japanese households are projected to consist of a single person living alone, according to UN Population Division projections. See also the Japan Cabinet Office survey.
There is a word in Japanese for dying alone and not being discovered for weeks: kodokushi. Lonely death. It is common enough to have its own term.
Japan is not receding from the world because of immigration. It is not being overrun or destabilized from without. It is hollowing out from within, island by island, apartment by apartment, screen by screen. A civilization of people in proximity, no longer in communion.
I wonder sometimes if we are watching our own future play out in a country that simply got there first.
The Real Threat at the Gate
There is a loud, anxious conversation happening in America right now about who is allowed in. The argument, roughly, is that the outsider is the danger, that what threatens this country arrives from elsewhere, speaks a different language, and carries different loyalties. I understand the anxiety, even where I do not share the conclusion. But I think it is aimed at the wrong horizon.
The U.S. Surgeon General declared loneliness a public health epidemic in 2023, noting that roughly half of American adults reported significant loneliness even before the pandemic hit. His advisory stated plainly that lacking social connection increases the risk of premature death to levels comparable to smoking fifteen cigarettes a day. Since 2003, the amount of time the average American spends alone has increased by roughly 24 hours per month, according to the American Time Use Survey. We are withdrawing, not from the border, from each other. See the Surgeon General advisory.
If we seal out immigrants and leave the phones on, we will do to ourselves what no invader could manage. We will age, isolate, decline, and splinter, not because strangers arrived, but because we stopped being able to bear the presence of anyone who was not already exactly like us. The technology we have built and exported to the world as proof of our genius may be the very thing quietly taking us apart.
The Confession
I am dictating this on a smartphone.
That sentence contains the whole problem. I have deleted the apps, stripped the device down to near utility, and thought seriously about going back to a dumb phone, and I cannot, not entirely, because there are medical apps I depend on that live there. The device that I believe is doing measurable harm to civilization is also, at this moment, the tool that got me over my writer's block and into this essay. I am not immune. Neither are you. Neither is anyone reading this on the glowing rectangle in their hand.
That does not mean we are helpless. Intentionality is possible. Treating the phone as a utility rather than an entertainment portal is possible. Noticing what it costs to pick it up compulsively and deciding whether that cost is worth it, that is available to us. It just requires the kind of sustained attention that the phone itself is designed to erode. The irony is exquisite and not particularly funny.
What We're Losing
Literacy was never just about decoding words. It was about the capacity to sit with difficulty, to hold a complex thought long enough to let it work on you, to follow an argument across pages and feel it shift something inside you. That capacity is what built institutions, democracies, and the shared projects of modernity. It was hard won over centuries. It is being traded, largely voluntarily, for the dopamine of the next notification.
We taught the world to read. Then we handed the world a device perfectly engineered to make deep reading feel like work and shallow scrolling feel like connection. The headlines still say literacy is rising. But something more important is going dark, not with a dramatic collapse, but with the quiet and incremental dimming of a civilization that has stopped paying attention.
The citizen alone in the apartment, swiping.
That's who we are becoming.