As people are showing the Rift to friends, word will spread that VR can be that good. So I'm not so worried in terms of adoption of the Rift.

The product cycle for the Oculus Rift will be between the rapid six-month cycle of cell-phones and the slower seven-year cycle of consoles. It's rare to see a phone not coming out every year.

We designed a number of features from the ground up, like custom display and optics technology with very high refresh rates and pixel density. We added integrated 3-D audio, a built-in microphone so you can speak to friends inside virtual worlds, and precise mechanical adjustment systems.

At Oculus, we're now looking at eye specialists, people who really understand how the human eye works, and how that affects human emotion.

There are millions of sci-fi enthusiasts in the world, not just gamers.

Windows never planned for a VR device. When you plug a HDMI cable into the computer, Windows thinks it's a new monitor. The desktop blinks. It tries to rearrange windows and icons.