Virtual reality
Around the same time, Douglas Engelbart used computer screens both as input and output devices. In 1968, Ivan Sutherland, with the help of many students including Bob Sproull, created what was widely considered to be the first head-mounted display (HMD) system for use in immersive simulation applications. It was primitive both in terms of user interface and realism, and the HMD to be worn by the user was so heavy that it had to be suspended from the ceiling. The graphics comprising the virtual environment were simple wire-frame model rooms. The formidable appearance of the device inspired its name, The Sword of Damocles.
Jaron Lanier
Jaron Zepel Lanier (, born May 3, 1960) is an American computer philosophy writer, computer scientist, visual artist, and composer of classical music. Considered a founding father of the field of virtual reality, Lanier and Thomas G. Zimmerman left Atari in 1985 to found VPL Research, Inc., the first company to sell VR goggles and gloves. In the late 1990s, Lanier worked on applications for Internet2, and in the 2000s, he was a visiting scholar at Silicon Graphics and various universities. In 2006 he began to work at Microsoft, and from 2009 has worked at Microsoft Research as an Interdisciplinary Scientist.