Hacker News on 27 December 2016

• Carrie Fisher has died
• Library-managed 'arXiv' spreads scientific advances rapidly and worldwide
• No tipping means better business
• 33rd Chaos Communication Congress Livestreams
• WebRTC: the future of web games
• Police seek Amazon Echo data in murder case
• Finger Trees: A Simple General-Purpose Data Structure (2006)
• Top-down learning path: Machine Learning for Software Engineers
• The best board games of 2016
• About Those Air Cushions in Amazon Packages