by David Streitfeld
■ Facebook stock lost $120 billion in value on Wednesday afternoon after chief executive Mark Zuckerberg said its two billion users really needed to get a life. Kidding! All that really happened was its quarterly numbers came in a little short and Facebook said that they would not immediately get better, but Wall Street thought it was the end of the world. For those who can’t get enough of tech’s favorite whipping boy, Casey Newton of the Verge has an excellent daily newsletter discussing the day’s social media tribulations.
■ In “The Political Education of Silicon Valley,” a long piece in Wired, Steven Johnson discusses how tech folks have evolved from libertarianism to left-wing, kind of. I didn’t agree with all of it, but that’s politics.
■ In a test of Amazon’s facial recognition software, the American Civil Liberties Union ran photos of members of Congress against a database of 25,000 mugshots. The software concluded that 28 of the lawmakers were criminals, including six members of the Congressional Black Caucus. Amazon said the software, which is being tested by police departments, was a tool and not a final authority.