Mark Bergen, writing for Bloomberg: The centerpiece of Apple's new headquarters is a massive, ring-shaped office overflowing with panes of glass, a testament to the company's famed design-obsessed aesthetic. There's been one hiccup since it opened last year: Apple employees keep smacking into the glass. Surrounding the Cupertino, California-based building are 45-foot tall curved panels of safety glass. Inside are work spaces, dubbed "pods," also made with a lot of glass. Apple staff are often glued to the iPhones they helped popularize. That's resulted in repeated cases of distracted employees walking into the panes, according to people familiar with the incidents. Some staff started to stick Post-It notes on the glass doors to mark their presence. However, the notes were removed because they detracted from the building's design, the people said.