The Battle for Your Attention

The clearest description of your phone was written before the internet existed. In 1971 the economist Herbert Simon — later a Nobel laureate — pointed out a simple consequence of the coming information age: when information becomes abundant, something else must become scarce, namely whatever information consumes. And what information consumes, he wrote, is the attention of the people receiving it. A wealth of information would create a poverty of attention — and would force us to ration it. Half a century later, that sentence reads less like economics and more like a weather forecast for the inside of your head.

The rationing, however, was not left to us. When the web's biggest services chose to be free, they inherited an old business model with new power: sell the audience, not the product. Television had done it crudely — everyone saw the same advertisement. The new platforms could do it person by person: every tap taught the system what held you, specifically, and every extra minute of your attention was extra inventory to sell to advertisers. The industry summarised itself in a phrase that became proverbial: if you're not paying for the product, you are the product. More precisely still — your attention is; you are the supplier.

From that model, one instruction followed for every designer in the building: maximise time spent. Not satisfaction, not benefit — time. And so the 2000s became a golden age of attention engineering, produced by clever, mostly well-meaning young people at exactly the moment nobody was asking whether it should be built. Which brings us to the two most consequential inventions — and to the strange fact that both inventors have spent the years since apologising.

The like button began, by all accounts, warmly. Justin Rosenstein, a young engineer, worked on the prototype of what became the button in 2007 — conceived as a way to send "little bits of positivity" with one tap. It worked beyond imagination: the button spread across the platform and then, as a design pattern, across the entire internet, and became something its makers hadn't planned — a scoreboard for the self, refreshed hourly, powered by exactly the variable rewards a slot machine uses. Rosenstein later described his own countermeasures to journalists: apps limited, the addictive services stripped from his phone, features he helped build blocked on his own devices. He compared the button's little bursts of approval to "bright dings of pseudo-pleasure" — the inventor, in effect, recommending you resist his invention.

The infinite scroll has an even neater confession attached. Aza Raskin, who designed it in 2006, removed the one moment when a page ends and a person naturally asks, "do I want more?" — the stopping cue. Efficient for browsing; catastrophic for stopping. Raskin has spent years since publicly reckoning with the maths of it, arguing that features like his waste hundreds of millions of human hours a day, and co-founding — together with Tristan Harris, a former Google design ethicist whose internal slide deck about attention had gone viral inside the company — the Center for Humane Technology, an organisation of insiders campaigning against the machinery they built. Their core argument is worth quoting plainly: this is not a fair fight between you and your phone; it is your willpower against a thousand engineers, and the engineers have the data.

The research meanwhile filled in the costs. Attention, it turns out, does not multitask; it switches, and every switch bills a fee — studies of interrupted work find it takes many minutes to fully return to a task after a ping. The famous "brain drain" experiments found that a phone merely lying visible on the desk, silent and face-down, measurably reduced people's working memory — part of the mind stands guard over the possibility of checking. And the designers' own children became the story's most quoted detail: reporters kept finding tech executives who capped their kids' screen time ruthlessly and paid for screen-free schools. The people who cooked the meal, as one commentator put it, were not eating it.

The backlash became a movement, then a market, then policy. Phone makers — pressured partly by their own investors — shipped screen-time dashboards and focus modes; "digital detox" became an industry; and the sharpest fights moved to childhood: country after country and school after school began banning phones from classrooms, with early evaluations reporting calmer corridors and better focus, and bestselling researchers arguing that the smartphone-and-social-media years coincide with a measurable collapse in teenage wellbeing. Parents' movements organised around delaying the first smartphone; legislators drafted age limits. The attention economy, for the first time, was on the defensive.

Honesty requires the other side of the argument, because it is real. Careful researchers reviewing the same teenage data warn that correlation is doing heavy lifting — unhappy teenagers may reach for screens rather than screens making them unhappy — and that average effects in the studies are small, while phones also deliver genuine goods: connection for the isolated, communities for the different, the family group chat, navigation, knowledge, the lifeline uses nobody wants banned. "Moral panic," the sceptics note, greeted novels, radio and television in their day too. The truthful position is uncomfortable in both directions: the evidence of harm is stronger for some children and some uses than for all; and the business model's intent — engineered maximum engagement — is not in dispute even where its damage is.

Which returns the battle to its actual front line: your settings, this evening. The insiders' practical advice has converged on a short list — kill the non-human notifications, greyscale the screen, no phone in the bedroom, put the slot-machine apps beyond one tap — not because willpower wins, but because friction does: every step between impulse and app returns the choice to you. Simon's rationing, in the end, was the right word. Attention is the budget from which every other thing in your life is paid — the conversation, the book, the child, the thought that needed two uninterrupted minutes to finish. The economy that spends it has engineers. The story's closing question is simply whether the defence does: who, in your household, is in charge of the budget?