Hacker News on 15 December 2014

• How You Know
• Good News You May Have Missed in 2014
• Hyphen Hate? When Amazon went to war against punctuation
• Map the Banks
• Programming and Programming Languages
• Underactuated Rotor for Simple Micro Air Vehicles
• Evolutionary couplings between files reveal poor software design choices
• Graphene: Fast, Strong, Cheap, and Impossible to Use
• Our 6 TB Hard Drive Face-Off
• How GPUs Work