Ivan Sutherland wrote about the Ultimate Display, a computer system that could simulate reality to the point where one could not differentiate between reality and simulation. The concept included haptic inputs and an HMD, the first complete definition of what Star Trek would call the Holodeck. We still do not have high-fidelity haptic feedback, though prototypes do exist.
The ultimate display would, of course, be a room within which the computer can control the existence of matter. A chair displayed in such a room would be good enough to sit in. Handcuffs displayed in such a room would be confining, and a bullet displayed in such a room would be fatal. With appropriate programming such a display could literally be the Wonderland into which Alice walked. - Ivan Sutherland