From China’s surveillance society to homegrown adversaries, this was the decade tech let us down (and continues to do so). One good example: Facebook Is Still Prioritizing Scale Over Safety. “‘Working at Facebook made me aware of how you can reprogram humans,’ one ex–product manager who recently left the company said. ‘It’s hard to believe that you could get humans to override all of their values that they came in with. But with a system like this, you can. I found that a bit terrifying.'” (Think that’s terrifying? Read the next lede…)

+ WSJ: “Facebook Inc.’s senior leadership is increasingly divided over how to address criticism of the company’s effect on U.S. politics, with board member and billionaire investor Peter Thiel serving as an influential voice advising CEO Mark Zuckerberg not to bow to public pressure.”