The above from The Guardian does make me wonder about the damage such technology has the potential to inflict. It does sound like killjoy-speak, but I have had balance problem for the past 3 years and a ride on The Simpsons ride in Universal Studios caused me to need medical attention because it completely screwed me up. I asked if it was like a roller coaster and was told that it wasn’t, but it ended up being a virtual ride where the visuals did not quite match up with the physical sensations. It only takes a millisecond here or there and people with balance problems can have their condition made much worse. This is why I am skeptical about how much medical research has gone into this new breed of VR.