On a subway train not long ago, I had the familiar, unsettling experience of standing behind a fellow-passenger and watching everything that she was doing on her phone. It was a crowded car, rush hour, with the dim but unwarm lighting of the oldest New York City trains.
Here is a very dumb truth: for a decade, the default answer to nearly every problem in mass media communication involved Twitter. Breaking news? Twitter. Live sports commentary? Twitter. Politics? Twitter. A celebrity has behaved badly? Twitter. A celebrity has issued a Notes app apology for bad behavior? Twitter. For a good while, the most reliable way to find out what a loud noise in New York City was involved asking Twitter. Was there an earthquake in San Francisco? Twitter. Is some website down? Twitter.
