node created 2012/07/21
http://blogs.valvesoftware.com/uncategorized/why-you-wont-see-hard-ar-anytime-soon/

Eventually we’ll get to SF-quality hard AR, but it’ll take a while. I’d be surprised if it was sooner than five years, and it could easily be more than ten before it makes it into consumer products. That’s fine; there are tons of interesting things to do and plenty of technical challenges to figure out just with soft AR. I wrote one of the first PC games with bitmapped graphics in 1982, and 30 years later we’re still refining the state of the art; a few years or even a decade is just part of the maturing process for a new technology. So sit back and enjoy the show as AR grows, piece by piece, into truly seamless augmented reality over the years.