Today marks the 15th anniversary of Steve Jobs pulling the MacBook Air out of a manila envelope at the 2008 Macworld Expo in San Francisco. Apple advertised the MacBook Air as being "the world's thinnest notebook" at the time. "We've built the world's thinnest notebook—without sacrificing a full-size keyboard or a full-size 13-inch display," said Jobs, in a January 2008 press release announcing the MacBook Air. "When you first see MacBook Air, it's hard to believe it's a high-performance notebook with a full-size keyboard and display. But it is." The original 13-inch MacBook Air featured a flip-down tray on the right side of the machine that provided access to a single USB port, a headphone jack, and a Micro-DVI port for connecting an external display. It was Apple's first notebook with a multi-touch trackpad, no CD/DVD drive, and an SSD upgrade option. Pricing started at $1,799 in the U.S. wit