Bitcoin hits $20,000, then drops back to $15,000. San Francisco to ban robots. DeepMindAI teaches itself to be a chess grandmaster in 4 hours. Net Neutrality dies in 4 days. Qualcomm and Microsoft announce Windows on ARM computers. Facebook Messenger for Kids targets 6-year-olds. 2017’s top 10 YouTube videos and earners. Jony Ive is back in charge at Apple design.