Hacker News on 24 February 2011

• Pattern: A web mining & natural language processing system for Python
• Calculus Revisited - a complete self-study calculus course from MIT OCW
• Thunderbolt
• New MacBook Pro series
• JQuery 1.5.1 released, includes full IE 9 support
• Apple releases dev preview of Mac OS X 10.7 Lion with AirDrop, FileVault
• Why We Stick With PHP (and don't move to Ruby or Python)
• How to build your own "Watson Jr." in your basement
• The lost art of pickpockets
• Chrome Developer Tools: Back to Basics