WEBVTT

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So, I think that the whole domain of 2D user interfaces
and 2D design is really well understood.
But 3D design or design for virtual reality is not very well understood.
So, a very basic thing is, how do I get from A to B?
How do I move through the environment? So, people say, "Okay, it's very easy;

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you get the controller and you press a button on the controller and it moves you forward
in the direction you're pointing or the direction you're looking."
But if you do that, you get sick. "So, okay, then you need a treadmill.
So that you really walk." The treadmill is expensive and
it takes a lot of space, and just people are not going to do it.
And then there's another idea for walking – walking in place.

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So, you simulate walking by just walking in place; the system recognizes that,
and it moves you in the direction. That's certainly better than pointing and clicking.
There's another paradigm where you just point at an area,
you click and you are there, but then you lose complete orientation about where you are in the environment.
So, a very basic thing like moving through an environment, a virtual environment
which is bigger than the real space you're in, where you can't really walk,

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this is unsolved; it's still there after 30 years.