What makes people choose such horrible nicknames?
Anyway, what you are describing, is not a 'virtual reality', but more like 'interfaces' or 'platforms'. You can display anything with goggles, you can use gloves for anything, and so on. That tech has nothing to do with virtual reality per se, it only acts as the technological platform or interface INTO the program, that may or may not be 'virtual reality'.
'Virtual Reality' itself is the visual-aural world, that exists only as a computer program (basically anyway), that can then be displayed in a more-or-less three-dimensional illusion to the viewer/user/experiencer. If we take an old game, like Doom, for example - that was played a lot with the so-called 'VR equipment', but that didn't mean that the equipment was the 'reality'. The game itself, the textures, the walls, the levels, the sounds, sprites, and the program are what forms the actual 'virtual reality', not the equipment.
The whole concept, the tech, the culture and all that - it never developed the way that many morons predicted. They envisioned that we would be using truly three-dimensional displays (as opposed to the completely two-dimensional displays we still use, no matter how "3D" game or program we use - every single "3D" game, program, image, animation, etc. that the normal PC user ever sees, is always just a two-dimensional PROJECTION of three-dimensional mathematics, handled by a program - there is nothing actually three-dimensional about it. There are a few useless excpeptions, which still do not actually fulfill the criteria for real three-dimensional display, like using "3D-glasses" or the kind of goggles you mention. Those simply utilize slightly different two-dimensional projection for each eye, but they are not actually three-dimensional.
It's still a long way to really three-dimensional graphics, if it ever really happens on this planet..
(the masses certainly are too dumb to ever really demand it - heck, they don't even know how to demand HDR after being confined to the finite supply of brightness (in 24 bit (and practically, even in 32 bit, because of how the 8 extra bits are used for alpha etc.), all you get is 256 different brightnesses. That's certainly not even close to how much variance there is in the real world, and could be expanded tremendously before hitting any kind of practical limitation, like being so bright it can cause eye damage or something -
- this is a long topic, but suffice to say that when the hospitals were moving from film (that can actually capture more than 256 degrees of brightness) that is displayed against a really bright light, for Röntgen film and such, to computer displays, they started complaining that they were not able to see the details properly, detail was lost, they were not able to make accurate diagnoses anymore, and so on, so they really wanted HDR monitors (and graphics cards, and image formats), but I don't even know what happened next, or are they still suffering, or what)
..but if it ever happens here, I am sure that a completely different way of capturing and displaying light will have to be invented, so that light waves/particles can be completely controlled.
True three-dimensional graphics would be like any three-dimensional object in the room, and you could see it from all sides, by just walking to the other side of it or just peeking around its corner, or whatever. This could be probably done in a room, to form a completely different kind of room, hallway, scenery, whatever, á la Holodeck, but of course the physical touching would be incredibly tricky to create in a believable fashion, and preventing the 'experiencer' from bumping into the walls of the room would be practically impossible to prevent (like in Holodeck, they supposedly somehow are able to create very large areas, and prevent that from happening, but it's not really credibly explained, how exactly that is achieved).
The Matrix idea about 'virtual reality' is also quite silly. On the surface, it seems credible - just replace the impulses that the brain receives from your physical body, by a digital version of those same exact impulses. (They forgot that it's not really the brain that's responsible for things like 'feel' - it's the soul, but the soul is sometimes convincingly duped even by this world, so why not a 'virtual version'?)
Except that this is NOT how the movie works!
They plug in, and they _GO_ into the Matrix, and then they have to _GET_OUT_ of it to return to the real world. Otherwise, they DIE.
This is of course ridiculous, but absolutely required by the plot, because otherwise there would be almost zero tension, especially in fights that happen in the 'virtual reality'.
I would never accept or suggest directly tampering with impulses and signals that the brain processes..
(heck, the clumsy Terran 'scientists' (or mockeries thereof) don't even know how it all works, but they pretend to know which area of brain is 'responsible' for which activity, stimulus, thought, or reaction - as in "this part of the brain is responsible for rational thought, so we know that no one uses rational thought when they make decisions", and all that BS that they blind people with, by using fancy words and 'scientific language' and self-importance, and white coats. A hint: if you want to impress people, wear a white coat)
.. but I have to admit, it's a version of 'virtual reality', that, if done PROPERLY..
(which would require ridiculously massive amount of data being constantly progressed at a ludicrous speed without hiccups, bugs, hang-ups, problems, crashes, instability or even the slightest technological glitch - and when you look at how well operating systems work (yes, I have been able to crash even Linux very easily), how well basic MMO(RPG)-games, like WoW work (crashes, 'combat bugs', 'text bugs', 'bugged quests', 'sudden nakedness', and so on, and so forth - they are certainly _NOT_ even close to what could be called 'stable' with wisdom), and how well computers, games, applications, programs, software and everyday things generally work, I certainly wouldn't trust anyone to let Terran technology to tamper with my brain signals or impulses)
.. could be a workable solution to actually creating a believable 'alternate reality' that the user couldn't easily tell apart from the actual reality.
There is really not much difference otherwise, to using "3D goggles" (that produce only 2D projections and simply create a 3D-ILLUSION) to 'walk' in 'Virtual Reality' or playing Skyrim or Rift on a regular monitor.
Because immersion is what it's all about. And you can be just as immersed without the goggles as you can with them. There's nothing particularly 'virtual' or 'real' about using a 3D-illusion creating 2D projection display device, compared to just a normal monitor. You won't believe any more that you are actually somewhere else by using the goggles, than you would with a regular monitor.
This is why these movies always incorporate some version of "the soul actually goes INTO a 'virtual reality'" instead of "VR is just a projection that can't give anyone 100% immersion, and can easily be shut off or ignored and put aside of something more important turns up".
So, no wonder you don't call your INTERFACES and your PLATFORMS "virtual reality", because that's exactly what they are _NOT_.
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