In 2014 we started talking to our computers, and they started talking back.
Amazon introduced Echo and the Alexa voice assistant in late 2014, moving conversation with a machine from science fiction into the living room. India reached Mars orbit on its first attempt, and Rosetta's Philae became the first probe to land on a comet.
In 2014 Amazon put a black cylinder on the kitchen counter and told you to talk to it. Alexa was clumsy at first, good for timers and weather and little else. But the interface was the message: for the first time, talking to a machine in plain language was not a gimmick, it was a product people chose to put in their homes.
I had spent my whole career watching the interface to computing shrink and soften: from cassette commands, to a mouse, to a touchscreen, and now to just your voice. Each step let in a wave of people the last step had left out.
Voice was another door. The one after it, the one we are walking through now, is the machine that understands what you actually meant.