Hacker News on 23 July 2012

• How the Norwegians Reacted to Terrorism
• Step by step from jQuery to Backbone
• The Sparrow Problem
• Destined To Fail
• Gittip stats
• HN's Daeken will expose security flaw in 4m hotel room keycard locks
• Distribution of colors in movie posters between 1914 and 2012
• Jack Daniels writes the politest cease and desist notice ever.
• Sally Ride, first American woman in space, has died at 61
• Marissa Mayer Has a Secret Weapon