Stage 5: The Present: low resolution virtual reality, using 3D glass.

Stage 6: "Photorealistic" augmented and mixed reality. The ability to see without glasses, rendered objects (that aren't actually there), generated by holographic rendering and 3D printing.

Virk: "Once you have a 3D model, you can print out pixels, for the object, (3D printing) so you'll have a three-dimensional object."

Stage 7: Computer/Mind interface (brain implants).

Virk: (interface) able to broadcast, directly to the mind with the ability to read brain reactions.

Stage 8: Implanted Memory through a physical Computer/Mind interface. (Think of the film, Total Recall).

Stage 9: Artificial Intelligence in computer generated characters, capable of passing the Turing Test.