One person invented infinite scroll, and he regrets it
Before 2006, a list of results ended. You reached the bottom, and to see more you clicked 'next page' — a small decision, and a natural place to stop. Then a designer called Aza Raskin built infinite SCROLL, where the FEED simply reloads for ever, and the stopping place quietly disappeared. He has spent years since saying publicly that he wishes he had not, estimating it costs people whole lifetimes of attention every day.
It is worth knowing because it reframes the usual telling-off. Struggling to put a phone down is not really a character flaw; the bottom of the page was removed on purpose by people who were very good at their jobs. Noticing that is more useful than being told to try harder.
Why the app buzzes when it does
A FEED is not a diary in date order. It is sorted by what an algorithm predicts will hold you longest, which is why a POST from three days ago appears above one from an hour ago, and why something TRENDING keeps reappearing. The app is optimising for time spent, because time spent is what it sells to advertisers.
The same thinking shapes the NOTIFICATION. Alerts are often held back and delivered in a batch at a moment you are likely to open the APP, because unpredictable rewards pull harder than predictable ones — the principle that makes slot machines work. None of this is a secret or a conspiracy; it is written up openly in design conferences. But a reader who knows it can see the machinery, and turning most notifications off is the single change that people say makes the biggest difference.
Where the words came from
EMOJI has nothing to do with emotion, despite the resemblance. It is Japanese: e means picture and moji means character, and the first set was drawn by Shigetaka Kurita in 1999 for a phone network — 176 tiny images on a 12-by-12 grid of dots, now in the collection of the Museum of Modern Art in New York. VIRAL is borrowed straight from disease, because a SHARE spreads the way an infection does: each person who passes it on exposes everyone they know.
That reach is the whole story of the INFLUENCER — a job that did not exist twenty years ago and now supports millions of people, built entirely on the number of accounts that FOLLOW them. It is also why the plainest words in the grid are the important ones. A private PROFILE, a considered USERNAME, thinking for a second before you UPLOAD a VIDEO or go LIVE, and knowing exactly where BLOCK is: those matter far more than LIKES, and they are the part worth talking about with anyone who is new to all this.
It helps to know which of these words quietly mean 'public'. A POST and a COMMENT are visible to strangers by default on most platforms. A MESSAGE feels private and still sits on somebody's server. A STORY looks temporary because it disappears after a day, but a screenshot takes half a second. And the HASHTAG is the most public word in the grid — its entire purpose is to show what you made to people who do not follow you.