Hacker News on 4 January 2017

• Grumpy: Go running Python
• TensorKart: self-driving MarioKart with TensorFlow
• Google reveals secret test of AI bot to beat top Go players
• Renewing Medium’s focus
• Tesla Flips the Switch on the Gigafactory
• Inkscape Version 0.92 is Released
• P vs. NP
• Richard Feynman Put Himself on the FBI’s Do Not Call List
• Rust at OneSignal
• Alexa: Amazon's Operating System