Opinion: Google Glass: half full or half empty?

Call it 20/20 hindsight if you will, but Google Glass' cancellation/demise/hiatus/ pupal stage (delete as you see fit) shouldn't have come as a surprise. Google has been gently talking down the device for months as key backers such as Twitter have quietly melted away. The company is adamant that Glass will return and has put Tony Fadell in charge of making that happen. Fadell is one of the midwives to the Apple iPod, a serial inventor with hundreds of patents to his name and, most recently, crea