Hacker News on 24 January 2009

• How to Choose Chart Types (pic)
• John Resig dissects the neural network javascript OCR captcha code
• Long-lost text shows Archimedes had begun to discover the principles of calculus
• Free the postcode
• Jeff Bezos and Root Cause Analysis
• Plan 9: why no compelling successor to Unix has got off the ground
• WWW SQL Designer
• Is Higher Education The Next Bubble?
• The Linux Alternative Project
• I need books that I can’t buy, I drink beer that I can’t sip