Yes, start here: I was at the World Trade Center on 9/11. I didn't have a camera and since that day have always had one (now a phone, of course), for there are images I saw that day, burned into my brain that I cannot share. The rest of the world saw the World Trade Centers from rooftops three miles away. I saw it at human level. It was a very different story.
So now imagine that hundreds, thousands of people had Google Glass that day. How different our perception of the event would have been. How different the reporting of the event, as it occurred and afterward, would have been.