Virtuality will destroy reality. So, it's some kind of accident, but an accident of a very different nature. The accident is not the accident. No, it's the reality of the glass that is accidented, not the glass itself. Cyberspace is an accident of the real.
Virtual reality is the accident of reality itself.
This is a little hard to explain. We have a sense of reality which is sustained by a physical sensation. With a data glove, I could hold a virtual bottle. It no longer occurs in matter, but in light or in images. A Cyberspace is a light-show.