On Twitter, Human-Powered Artificial Intelligence

Twitter decides humans are still better than computers at understanding other humans. Photograph by Gabriel Bouys/AFP via Getty Images

Twitter has done a lot to change the way people share news, watch live television, and even how they protest. Along the way it’s had to deal with scaling problems as well as the challenge of tracking how users connect with each other, and how to then instantly—or at least very quickly—deliver the right tweets to the right streams.

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