Last week, I emerged from the depths of the Tube in central London for a day that would once have been unthinkable.
First, I bought a morning coffee to fortify myself for a battery of work meetings lurking ahead. A few hours later, I went out for a dull but edible box of sushi. On the way back to the office, I dropped into a mini-supermarket to buy some of the Earl Grey tea bags that get me through the afternoon.
Each time, I had minimal or zero contact with a human. Instead, I ordered and paid for everything by jabbing at one of the ever more inescapable touchscreens that now pepper public life.
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