The greatest tech demo ever

Ten years after Oculus emerged, it's a critical year for VR

I've been to a lot of tech trade shows, but I wouldn't even hesitate if you asked me about the most impressive thing I've ever seen at one. It's the Oculus Rift prototype from the 2013 Consumer Electronics Show.

My first CES was 2012, and even back then most people seemed to think the whole affair was a lost cause. Wall Street Journal columnist Walt Moss…