Hacker News on 20 July 2014

• Calling All Hackers: Help Us Build an Open Wireless Router
• Introduction to A*
• Love People, Not Pleasure
• Level-Up Your Machine Learning
• How to Be Happy
• A Lisper's first impression of Julia
• An Illustrated Book of Bad Arguments
• I Don't Know Swift
• The Nature of Code
• DNS.watch – Fast, free and uncensored