In October 24, Tim Cook, the CEO of Apple, gave an epochal speech to a conference of European data officials. Many outside the technology industry have warned that we are sleepwalking our way through a vast transformation of politics, economy and society. Our world is being remade around us by data and by algorithms. Tools ...

After the election, many people blamed Facebook for spreading partisan — and largely pro-Trump — “fake news,” like Pope Francis’s endorsement of Trump, or Hillary Clinton’s secret life-threatening illness. The company was assailed for prioritizing user “engagement,” meaning that its algorithms probably favored juicy fake news over other kinds of stories. Those algorithms had taken ...