Futurist and former Google engineer Ray Kurzweil said that he believes humans will reach immortality by 2045, according to Youtuber Adagio who discussed Kurzweil’s theory in a two-part Youtube series.

Kurzweil believes that humanity is moving toward a singularity in 2045 which is powered by exponential growth – a theory that says that when an industry becomes interesting, more resources are invested into it, meaning that more research can be done and causing the industry to advance at greater speeds as time goes on.
The singularity will come at the end of six epochs, according to Kurzweil who added that we have gone through four: physics, chemistry, DNA and biology and brains and technology. According to the theory, humanity is currently in the midst of the fifth epoch which is human technology and human intelligence.
After humanity achieves the sixth epoch, Kurzweil believes that we will saturate our intelligence into the rest of the universe. He believes that humans, specifically, are intended to do this because the fact that we haven’t found proof of alien life yet means that it doesn’t exist.