This Apple employee is so secretive he signs his emails with a question mark (AAPL)

Apple is known for being extremely secretive, not only to the public but internally as well. Employees learn information on a need-to-know basis, which means you're only given the exact amount of insight you need to do your job. So if you're a hardware engineer, you probably won't have any clue as to what an engineer on the software team is working on.  But one Apple employee on Apple's Special Projects team is so secretive it seems he doesn't want anyone to know what he's up to. Engineer Frank...