Hacker News on 21 March 2015

• Ravens Offensive Lineman Publishes Math Paper
• Goat Simulator Post Mortem
• AT&T Charging Customers to Not Spy on Them
• 12-minute Mandelbrot: fractals on a 50 year old IBM 1401 mainframe
• DemocracyOS
• Ask HN: Do you take nootropics?
• Ask HN: What startups are working on hard, technically challenging problems?
• The Mystery of Extraordinarily Accurate Medieval Maps (2014)
• The Little “Fighter” That Couldn’t: Moral Hazard and the F-35
• The Terrible Technical Interview