"Apple then took pictures of the device padlocked to the desk, making sure to capture the table's wood grain. That way if any pictures did leak, Apple could trace the images back to the particular desk and wood grain they were taken on, and thus trace the leaks to the company in its possession."
Apple's NDA Disclosed: Why You Won't See The iPhone 5 Until Tim Cook's Ready
Moods on Twitter Follow Biological Rhythms, Study Finds – NYTimes.com
",,, researchers discovered that the emotional tone of people’s messages followed a similar pattern not only through the day but also through the week and the changing seasons. The new analysis suggests that our moods are driven in part by a shared underlying biological rhythm that transcends culture and environment."