By the time Al Gore released his Oscar winning documentary “An Inconvenient Truth“, few skeptics were left that the world’s climate was changing. Now, Ray Kurzweil — one of the most prolific inventors of the 20th century -  is releasing an eminent documentary of his own. Many futurists, including a growing band of leading scientists, predict that by 2045 we will have multiplied the intelligence of the human-machine civilization a billion-fold and reached the Singularity. Whereas personal computers, videogames and cellphones were the emerging technologies of the 1970′s and 1980′s, today’s include mind-reading headsets, organic computing and nanotechnology. When I . . . . . .