When Ivan Sutherland created the first Head-Mounted Display (HMD), the “Sword of Damocles System,” in 1968, he propelled the field of visual illusions into the digital realm. With that, he created a new area of computer science: virtual reality. A half-century later, this field is still in flux. We are still in the wild, uncharted waters of what this technology can do, both in terms of hardware and software. Now is the time to be talking about the risks.

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