Compared to Him, I'm Eeyore

Reinventing Humanity
by Ray Kurzweil

[All emphasis added] [The] explosion in machine intelligence, and rapid innovation in the fields of gene research as well as nanotechnology, will result in a world where there is no distinction [...] between physical and virtual reality. These technological revolutions will allow us to transcend our frail bodies with all their limitations. Illness, as we know it, will be eradicated. Through the use of nanotechnology, we will be able to manufacture almost any physical product upon demand, world hunger and poverty will be solved, and pollution will vanish. Human existence will undergo a quantum leap in evolution. We will be able to live as long as we choose. [...]

How is it possible we could be so close to this enormous change and not see it? The answer is the quickening nature of technological innovation. In thinking about the future, few people take into consideration the fact that human scientific progress is exponential: It expands by repeatedly multiplying by a constant (10 to times 10 times 10 and so on) rather than linear; that is, expanding by repeatedly adding a constant (10 plus 10 plus 10, and so on). I emphasize the exponential-versus-linear perspective because it’s the most important failure that prognosticators make in considering future trends.

Our forebears expected what lay ahead of them to resemble what they had already experienced, with few exceptions. Because they lived during a time when the rate of technological innovation was so slow as to be unnoticeable, their expectations of an unchanged future were continually fulfilled. Today, we have witnessed the acceleration of the curve. Therefore, we anticipate continuous technological progress and the social repercussions that follow. We see the future as being different from the present. But the future will be far more surprising than most people realize, because few observers have truly internalized the implications of the fact that the rate of change is itself accelerating.

Exponential growth starts out slowly and virtually unnoticeably, but beyond the knee of the curve it turns explosive and profoundly transformative. My models show that we are doubling the paradigm-shift rate for technology innovation every decade. In other words, the twentieth century was gradually speeding up to today’s rate of progress; its achievements, therefore, were equivalent to about 20 years of progress at the rate of 2000. We’ll make another “20 years” of progress in just 14 years (by 2014), and then do the same again in only seven years. To express this another way, we won’t experience 100 years of technological advance in the twenty-first century; we will witness on the order of 20,000 years of progress (again, when measured by today’s progress rate), or progress on a level of about 1,000 times greater than what was achieved in the twentieth century. [...]

[R]esearcher Robert Freitas estimates that eliminating 50% of medically preventable conditions would extend human life expectancy 150 years. If we were able to prevent 90% of naturally occurring medical problems, we’d live to be more than 1,000 years old.

Well, we'd have the potential to live for a thousand years, but most people would die due to accidents long before then.

The full article is much longer, and offers many specific predictions about how the future's miracles will be achieved, and what affect on human society they'll have.

I take issue with the estimate that during the entire 20th century, there was only twenty years' worth of technological advance at the year 2000 rate, and therefore I disbelieve that we'll see advances during the 21st century that will more than eclipse the entire current sum of recorded human history.

For one thing, there's an enormous difference between a lab breakthrough, and full society-wide integration of a working device or technique based on that research.
DVD players, for instance, took a decade to become ubiquitous, and they weren't even a new concept, merely replacing VCRs.

Still, the trend is clearly more, faster, and I expect that the 21st century will see technological change equal to that of between Magellan and now, especially in the biosciences.

I agree completely that virtual reality will become extended reality. It won't just be an escape, or entertainment, it'll be an everyday method of interacting with geographically-dispersed people, machines, and information-gathering sensors, for both fun and work.

While in most cases we'll know whether we're operating in reality or virtual reality, it'll only be backround knowledge, just as we now keep track of day and night, but don't keep our schedules by them anymore.