When Google sent BASE jumpers hurtling from a blimp as part of the first day Google I/O Keynote presentation, I was barely impressed. The jumpers were demonstrating the Project Glass wearable computer that Google is developing, and which I and just about all of my friends are lusting over. I had seen plenty of skydivers jumping with wearable cameras strapped to them. Then the Googlers landed, and another team started riding BMX bikes on the roof of the Moscone center, where the conference is being held. Yawn. Finally, climbers rappelled down the side of the building. Ho-hum. The point seemed to be that Google Glass was real, and that the glasses would not fall off your face as you fell onto San Francisco from a zeppelin. But then Google showed something that blew my mind.