Hacker News on 15 August 2014

• Project Euler Returns
• Inside the Dark, Lucrative World of Consumer Debt Collection
• An amateur linguist loses control of the language he invented (2012)
• I am not planning any nuclear attacks
• Gavin Andresen, the Most Powerful Person in the World of Bitcoin
• The 30-year-old health sector billionaire
• Tesla's Infinite Mile Warranty
• The most common errors in undergraduate mathematics
• Vindinium: An artificial intelligence programming challenge
• Green Arabia