Hacker News on 21 October 2012

• Guerrilla guide to CNC machining, mold making, and resin casting
• Restoration of defocused and blurred images
• When A Daughter Dies
• Missing the Point of Promises
• How the CIA Used a Fake Sci-Fi Flick to Rescue Americans From Tehran (2007)
• Sorting 1 million 8-digit decimal numbers in 1MB of RAM
• Jq - a lightweight and flexible command-line JSON processor
• Salesforce will hire 40-50 Postgres people
• Shepard tone
• I went to the mall, and a little girl called me a terrorist.