161209 with Details
I watched a couple episodes of a show called "Edge of the Universe." Mostly it dealt with the detection of planets beyond the Solar System. When I was a kid, nobody knew if there were any planets besides our little family. Many people believed there must be, but nobody knew. The show informed me that the first exoplanet was discovered in 1995. It went on to say that there had been about 700 exoplanets discovered since then. Wow! It's amazing how quickly these discoveries occurred. Then I realized that the show was like 10-11 yrs old, so I looked up the current information:
As of December 6, 2016, astronomers have identified 3,545 exoplanets (in 2,660 planetary systems and 597 multiple planetary systems). The majority have been discovered in the past two years! Consider the exponential growth curve of this knowledge. Maybe Kurzweil is right.