I think 'several decades' is probably pessimistic by a decade or so in my opinion...
We're still several decades away from developing completely immersive computer simulations, but it's not too early to dream about the ways we'll be able to use them. Today we're exploring the tremendous potential with new gadgets like Glass, Google's computer glasses. But that's just the beginning.
So, in preparation, given all the different options soon to be available, what kind of virtual reality experience will you choose?
Will it be a partial soft simulation? Or perhaps you would prefer an active communal experience? Confused? No worries, we'll go over all your options. And in the end, you may even find that you'll want to mix and match.
Indeed, when considering the all the different possibilities that could come about through the advent of advanced simulation technologies, it becomes obvious fairly quickly that there will be a wide number of interactive possibilities. Thankfully, a number of futurists have made an attempt to predict what we can expect — and how we may wish to spend our time in environments far removed from our own.