Hacker News on 16 April 2012

• Light Table's Numbers, And What's Happening Next
• Tupac image performs at Coachella [video]
• From idea to replacing full-time salary in 4 months
• Getting around the London 2012 branding police
• What it takes to build great machine learning products
• Why it's OK to leave a tech job at 5 p.m.
• Google Drive detailed: 5 GB of free space, launching next week
• SpaceX's Dragon ship set for station visit
• Learn to read the source, Luke
• Of parser-fetishists and semi-colons