Hacker News on 13 September 2009

• How twitter helped a technology consultant escape from an evil hospital
• MIT Students Take Pictures from 93,000 ft on $150 Budget.
• Paul Buchheit: Evaluating risk and opportunity (as a human)
• On Saying No - The Power of Simply Answering, "No."
• Netflix prize tribute: Recommendation algorithm in Python
• What is Erlang-Style Concurrency?
• How Google Taught Me to Cache and Cash-In
• What We Can Learn About Pricing From Menu Engineers
• Father of Green Revolution, Norman Borlaug, Dies
• Integrating Django with Tornado's web server